🏠/MRCOG Part 1 — Study Book/Appendices/Mock Exams/Mock Exam 08

On this page

The pelvic inlet (superior pelvic aperture) is bounded anteriorly by the pubic symphysis and the pubic crest, laterally by the iliopectineal lines, and posteriorly by the sacral promontory and alae of the sacrum. The pubic symphysis is a midline cartilaginous joint connecting the two pubic bones.
The obstetrical conjugate (true conjugate or conjugata vera) is the shortest diameter of the pelvic inlet, measured from the sacral promontory to the most prominent posterior aspect of the pubic symphysis (its inferior border). It is the most clinically relevant measurement, normally about 10.5–11 cm.
The gynecoid pelvis is the classic female pelvic shape, found in about 50% of women. It has a round to transverse oval inlet, well-curved sacrum, rounded pelvic sidewalls, and a wide pubic arch — all features that favor vaginal delivery. The android pelvis is male-like and associated with obstructed labor.
The levator ani is primarily innervated by direct branches from the sacral plexus (S3–S4), often called the nerve to levator ani. The pudendal nerve (S2–S4) supplies the external anal sphincter and perineal muscles but does not directly innervate the levator ani. Pelvic splanchnic nerves carry parasympathetic fibers.
The deep inguinal ring is an opening in the transversalis fascia located approximately 1.25 cm above the midpoint of the inguinal ligament. It marks the beginning of the inguinal canal. The superficial ring lies in the external oblique aponeurosis.
As the ureter enters the pelvis, it passes beneath the uterine artery approximately 2 cm lateral to the supravaginal cervix — a relationship famously described as "water under the bridge." This is of immense surgical importance during hysterectomy to avoid accidental ureteric ligation or injury.
The ovarian arteries arise directly from the abdominal aorta, just below the renal arteries (at the level of L2). They cross the pelvic brim with the ureters to supply the ovaries and also anastomose with terminal branches of the uterine artery.
A mediolateral episiotomy typically incises the superficial transverse perineal muscle along with the skin and vaginal mucosa. The bulbospongiosus and ischiocavernosus are more anterior. The external anal sphincter can be involved if the episiotomy extends, but the primary muscle incised is the transversus perinei superficialis.
The cervix drains primarily to the obturator and internal iliac (hypogastric) lymph nodes. From there, drainage proceeds to the common iliac and para-aortic nodes. The inguinal nodes drain the vulva and lower vagina. The para-aortic nodes become involved in advanced disease.
The round ligament of the uterus is derived from the gubernaculum, which in the female connects the ovary to the labium majus. The portion from the uterus to the labium majus becomes the round ligament, while the portion from the ovary to the uterus becomes the ovarian ligament.
The pudendal nerve (S2–S4) exits the pelvis through the greater sciatic foramen, passes posterior to the sacrospinous ligament (or between the sacrospinous and sacrotuberous ligaments), and then re-enters the pelvis through the lesser sciatic foramen to enter the pudendal (Alcock's) canal.
The crescentic (semilunar) hymen is the most common type in virginal women, with an opening located anteriorly. An annular (circumferential) hymen has a central opening and is also common. Imperforate, septate, and cribriform hymens are variations that may require surgical correction.
The functional layer (stratum functionalis) of the endometrium is the superficial two-thirds that proliferates under estrogen, undergoes secretory changes under progesterone, and is shed during menstruation. The basalis layer (stratum basalis) remains intact and serves as the regenerative layer.
The female urethra courses at approximately a 30-degree angle posteriorly relative to the vertical. This angulation, along with the external urethral sphincter and the pubovesical ligaments, contributes to urinary continence. Significant loss of this angle may contribute to stress incontinence.
The broad ligament contains the uterine tube, round ligament, ovarian ligament, and vestigial remnants (epoophoron, paroophoron). The ureter runs in the extraperitoneal connective tissue below the broad ligament, passing close to the supravaginal cervix — it is not within the broad ligament itself.
The vulva (labia, clitoris, and perineal skin) drains primarily to the superficial inguinal lymph nodes. From there, drainage proceeds to the deep inguinal nodes and then to the external iliac nodes. The labia minora may also drain directly to the external iliac nodes.
The interspinous diameter (normal ~10.5 cm) is the transverse diameter of the midpelvis measured between the two ischial spines. It is the smallest diameter of the pelvic cavity and is a critical determinant of successful vaginal delivery. Narrowing (<9.5 cm) suggests midpelvic contraction.
The sacral promontory is the anterior projection of the body of the first sacral vertebra (S1) at its junction with the L5 vertebra. It forms the posterior-most bony landmark of the pelvic inlet and is palpated during clinical pelvimetry.
The phrenic nerve (C3–C5) provides the exclusive motor supply to the diaphragm. The accessory phrenic nerve (from C5, often a branch of the nerve to subclavius) is inconstant and only contributes a small portion. The vagus and sympathetic nerves carry only sensory fibers to the diaphragm.
The pelvic outlet is bounded laterally by the ischial tuberosities and the obturator internus muscles covering the lateral pelvic walls. The piriformis forms the posterior boundary, while the pubic arch forms the anterior boundary. The levator ani and coccygeus form the pelvic floor.
The fimbriae are finger-like projections at the infundibulum of the uterine tube that sweep over the ovarian surface at ovulation, creating currents in the peritoneal fluid that draw the ovum into the tube. Fertilization normally occurs in the ampulla of the tube.
The ovaries drain lymph directly to the para-aortic (lumbar) lymph nodes, following the ovarian vessels upward. This is why ovarian cancer can spread to para-aortic nodes even in early stages, without involving the pelvic nodal groups. The cervix, upper vagina, and vulva drain to pelvic nodes first.
The uterus, uterine tubes, and upper two-thirds of the vagina are derived from the paramesonephric (Müllerian) ducts, which fuse in the midline to form the uterine canal. Failure of fusion leads to Müllerian anomalies such as bicornuate or didelphys uterus.
The pelvic portion of the ureter receives its blood supply from branches of the uterine artery (most important), the superior vesical artery (inferior part), and sometimes the middle rectal artery. The ovarian artery supplies the abdominal portion of the ureter. The blood supply runs in the adventitia.
The sacroiliac joints undergo the most significant hormonal relaxation during pregnancy due to the effects of relaxin and estrogen. This increases pelvic mobility and anteroposterior diameter. The pubic symphysis also relaxes but to a lesser degree. This relaxation can contribute to pelvic girdle pain.
As the uterus enlarges during pregnancy, the appendix is displaced upward and laterally. By term (40 weeks), the appendix is commonly located in the right upper quadrant, near the gallbladder. This makes the diagnosis of appendicitis in pregnancy challenging and may present with right upper quadrant pain.
The external anal sphincter is a striated voluntary muscle innervated by the inferior rectal nerve (a branch of the pudendal nerve, S2–S4). The pudendal nerve also supplies the sphincter via its perineal branch. The internal anal sphincter (smooth muscle) is innervated by autonomic fibers.
The ovarian ligament (ligament of the ovary) extends from the inferior pole of the ovary to the lateral angle of the uterus, just below the uterotubal junction. It is a remnant of the gubernaculum and lies within the broad ligament. The suspensory ligament of the ovary attaches the ovary to the pelvic wall.
The anterior division of the internal iliac artery gives off the umbilical artery (which becomes the medial umbilical ligament postnatally), superior vesical, inferior vesical, uterine, vaginal, middle rectal, obturator (often from the external iliac though), and internal pudendal arteries. The posterior division gives off the iliolumbar, lateral sacral, and superior gluteal arteries.
In females, the inguinal canal contains the round ligament of the uterus, the ilioinguinal nerve, and the genital branch of the genitofemoral nerve. In males, it contains the spermatic cord (vas deferens, testicular vessels, etc.). The round ligament passes through the inguinal canal to insert into the labium majus.
The ampulla is the widest and longest part of the uterine tube and is the most common site for ectopic pregnancy (approximately 70% of cases). Fertilization normally occurs here. The isthmus is the next most common site, while interstitial (cornual) ectopics are rare but more dangerous.
The genitofemoral nerve (L1–L2) supplies the skin of the anterior upper medial thigh via its femoral branch and the labia majora (or scrotum in males) via its genital branch. The ilioinguinal nerve (L1) supplies the mons pubis and the anterior part of the labia majora.
A posterior colporrhaphy repairs a rectocele, which is herniation of the rectum into the posterior vaginal wall. This involvesplication of the rectovaginal fascia (Denonvilliers' fascia) and the levator ani muscles. An anterior colporrhaphy repairs a cystocele.
The perineum is diamond-shaped, bounded anteriorly by the pubic symphysis, laterally by the ischial tuberosities, and posteriorly by the coccyx. A transverse line connecting the two ischial tuberosities divides it into the anterior urogenital triangle and the posterior anal triangle.
The medial quadrants of the breast drain primarily to the internal mammary (parasternal) lymph nodes, which run along the internal thoracic artery. The lateral quadrants drain primarily to the axillary nodes. The supraclavicular nodes receive drainage from the apical axillary nodes.
Above the arcuate line (approximately midway between umbilicus and pubic symphysis), the anterior rectus sheath is formed by the external oblique aponeurosis alone, and the posterior rectus sheath is formed by the fused aponeuroses of the internal oblique and transversus abdominis. Below the arcuate line, all three aponeuroses pass anterior to the rectus, leaving only transversalis fascia posteriorly.
The Bartholin glands (greater vestibular glands) lie in the superficial perineal pouch, one on each side of the vaginal orifice, deep to the bulbospongiosus muscle. They produce mucus during sexual arousal. Their ducts open into the posterolateral aspect of the vaginal vestibule.
The pudendal nerve block is performed by depositing local anesthetic near the ischial spine, as the nerve wraps around the sacrospinous ligament just posterior to the spine. A transvaginal approach guides the needle to this landmark. This block provides anesthesia to the perineum for operative vaginal delivery.
The urachus is a remnant of the allantois, a diverticulum from the yolk sac that projects into the connecting stalk. After birth, it becomes the median umbilical ligament, a fibrous cord running from the bladder apex to the umbilicus. A patent urachus can cause urine leakage from the umbilicus.
The round ligament of the uterus helps maintain uterine anteversion by pulling the uterine fundus forward. The uterosacral ligaments pull the cervix posteriorly, contributing to anteversion as well. The transverse cervical ligaments (cardinal ligaments) are the primary supports preventing uterine prolapse.
The vagina is lined by stratified squamous non-keratinized epithelium, which is estrogen-sensitive. It undergoes cyclical changes during the menstrual cycle and shows maturation in response to estrogen. The ectocervix is also covered by this epithelium, while the endocervix has simple columnar epithelium.
The transverse diameter of the pelvic inlet (the widest distance between the iliopectineal lines on each side) normally measures approximately 13.0–13.5 cm. The anteroposterior diameters (obstetric conjugate ~10.5–11 cm, diagonal conjugate ~12–12.5 cm) are smaller.
The retropubic space (of Retzius) is an extraperitoneal space between the pubic symphysis (anteriorly) and the urinary bladder (posteriorly). It contains loose areolar tissue and the retropubic venous plexus. It is surgically entered during retropubic sling procedures and cystectomy.
The inferior epigastric artery is a branch of the external iliac artery, not the internal iliac artery. It arises just above the inguinal ligament and runs superomedially to enter the rectus sheath. The superior and inferior gluteal arteries, obturator artery, and internal pudendal artery are all branches of the internal iliac artery.
The median umbilical ligament runs from the apex of the bladder to the umbilicus and is the remnant of the urachus (allantois). The medial umbilical ligaments are remnants of the umbilical arteries, and the lateral umbilical ligaments contain the inferior epigastric vessels.
The iliopectineal line is the bony ridge that runs from the sacral promontory, along the ala of the sacrum and the arcuate line of the ilium, to the pecten pubis (pectineal line of the pubis). It forms the lateral boundary of the pelvic inlet (pelvic brim).
The bulbourethral glands (Cowper's glands) in males are homologous to the greater vestibular glands (Bartholin glands) in females. Both develop from the urogenital sinus and produce mucus. Skene's glands are homologous to the male prostate.
The gubernaculum is a fibromuscular cord that guides the testis through the inguinal canal into the scrotum. It shortens during fetal development, pulling the testis downward. The processus vaginalis is a peritoneal outpouching that precedes the testis and later becomes the tunica vaginalis.
The left ovarian vein drains into the left renal vein at a right angle, while the right ovarian vein drains directly into the inferior vena cava. This anatomical difference predisposes to left-sided ovarian vein syndrome and may contribute to left-sided varicocele in males (left testicular vein).
The deep perineal pouch (urogenital diaphragm) contains the external urethral sphincter, the deep transverse perineal muscle, the urethra, the vagina, and the dorsal nerves and vessels of the clitoris. The superficial perineal pouch contains the bulbospongiosus, ischiocavernosus, superficial transverse perineal muscles, and Bartholin glands.
The posterior femoral cutaneous nerve (S1–S3) supplies the skin of the posterior thigh and the posterior aspect of the perineum (the perineal branches). The pudendal nerve supplies the external genitalia via its perineal branch. The ilioinguinal and genitofemoral nerves supply the anterior perineum.
The vesicouterine pouch is the peritoneal reflection between the bladder and the uterus. The uterus is covered anteriorly by peritoneum down to the level of the isthmus, where it reflects onto the bladder forming this pouch. During Cesarean section, the vesicouterine pouch is incised to access the lower uterine segment and displace the bladder downward.
The female external urethral meatus is located in the vestibule between the clitoris anteriorly and the vaginal orifice posteriorly. It is approximately 2–3 cm posterior to the clitoral glans. Skene's glands (paraurethral glands) open on either side of the external urethral meatus.
The pelvic floor is composed of the levator ani (pubococcygeus, iliococcygeus, and puborectalis) and the coccygeus (ischiococcygeus) muscles. The obturator internus is a muscle of the lateral pelvic wall, not part of the pelvic floor, though its fascia provides attachment for the levator ani.
The suspensory ligament of the ovary (infundibulopelvic ligament) extends from the ovary to the lateral pelvic wall and contains the ovarian artery and vein, lymphatics, and nerves. It is a fold of peritoneum and is surgically important during oophorectomy.
The pubocervical ligament (pubocervical fascia) is a sheet of connective tissue extending from the posterior surface of the pubic bones to the anterior aspect of the cervix and upper vagina. It helps support the bladder and anterior vaginal wall. Its weakness contributes to cystocele formation.
The obturator nerve (L2–L4) supplies the muscles of the medial compartment of the thigh: adductor longus, adductor brevis, adductor magnus (adductor part), gracilis, and obturator externus. It also provides sensory innervation to the medial thigh. In O&G, it can be injured during pelvic surgery.
The subpubic arch in a gynecoid pelvis is wide, typically 80–85 degrees. A narrow arch (<70 degrees, as in the android pelvis) is associated with a narrowed pelvic outlet and increased risk of obstructed labor. The wide arch allows easier passage of the fetal head.
The conus medullaris (the tapered end of the spinal cord) in adults typically lies at the level of the L1–L2 vertebral interspace. Below this, the nerve roots form the cauda equina within the dural sac. This is important for spinal and epidural anesthesia in obstetric practice.
Denonvilliers' fascia (rectovaginal septum) is a fibromuscular layer separating the rectum from the posterior vaginal wall. It extends from the peritoneum of the pouch of Douglas superiorly to the perineal body inferiorly. It is an important surgical plane during rectocele repair and posterior colporrhaphy.
The rectouterine pouch (pouch of Douglas) is the most dependent part of the peritoneal cavity in females when standing or sitting. It lies between the rectum posteriorly and the uterus and posterior vaginal fornix anteriorly. Fluid collections (blood, pus, ascites) tend to accumulate here and can be aspirated via posterior colpotomy.
The fallopian tubes receive their blood supply from the tubal branches of both the uterine artery (medially) and the ovarian artery (laterally). These vessels anastomose within the mesosalpinx, providing a rich blood supply. The venous drainage parallels the arterial supply.
The lateral sacral artery is a branch of the posterior division of the internal iliac artery. The anterior division gives off the umbilical, superior vesical, inferior vesical, uterine, vaginal, middle rectal, internal pudendal, and usually the obturator arteries.
The perineal body is a fibromuscular mass in the midline between the anus and the vagina. It provides attachment for the bulbospongiosus, superficial and deep transverse perineal muscles, pubococcygeus, and external anal sphincter. It is a key structure in episiotomy repair and perineal reconstruction. Damage contributes to pelvic organ prolapse.
The inferior epigastric artery is not in the spermatic cord — it runs in the lateral umbilical fold medial to the deep inguinal ring. The spermatic cord contains the vas deferens, testicular artery, pampiniform plexus, cremasteric artery, lymphatics, and the genital branch of the genitofemoral nerve.
The uterus is normally anteverted and anteflexed. The cervix points posteriorly toward the sacrum, while the uterine fundus points anteriorly. This means the external os of the cervix is directed posteriorly, which is why the speculum is angled posteriorly during insertion.
The external iliac artery passes beneath the inguinal ligament to become the femoral artery. This transition occurs at approximately the midpoint of the inguinal ligament (midway between the anterior superior iliac spine and the pubic symphysis), which is also where the femoral pulse is palpated.
The rectus abdominis muscle is innervated segmentally by the anterior rami of the lower thoracic nerves (T7–T11) and the subcostal nerve (T12). These nerves enter the rectus sheath laterally and supply the muscle from its posterior aspect.
The female urethra is short (3–4 cm). It is lined by transitional epithelium near the bladder (proximal) and stratified squamous non-keratinized epithelium distally. The internal urethral sphincter is smooth muscle (involuntary), while the external urethral sphincter is skeletal (voluntary).
The upper vagina (upper two-thirds) drains primarily to the internal iliac (hypogastric) and obturator lymph nodes, similar to the cervix. The lower vagina (lower one-third) drains to the superficial inguinal nodes, like the vulva. This dual drainage pattern is important in staging vaginal cancer.
The piriformis muscle originates from the anterior surface of the sacrum and exits the pelvis through the greater sciatic foramen to insert on the greater trochanter of the femur. It is a key landmark in the gluteal region, and structures passing above or below it are described as suprapiriform or infrapiriform.
In females, the mesonephric ducts largely degenerate. Their remnants persist as the epoophoron and paroophoron, which are small vestigial structures in the broad ligament near the ovary and uterine tube. Gartner's duct cysts are remnants of the mesonephric duct in the lateral vaginal wall.
The external urethral sphincter (sphincter urethrae) is a striated voluntary muscle in the deep perineal pouch that encircles the urethra and provides active compression to maintain urinary continence. The levator ani provides additional support. The bulbospongiosus constricts the vaginal orifice.
The sacrotuberous and sacrospinous ligaments convert the greater and lesser sciatic notches of the ilium into the greater and lesser sciatic foramina, respectively. The sacrotuberous ligament runs from the sacrum to the ischial tuberosity, and the sacrospinous ligament from the sacrum to the ischial spine.
The dorsal nerve of the clitoris is the terminal branch of the pudendal nerve and provides the primary sensory innervation to the clitoris. It runs along the inferior pubic ramus, pierces the perineal membrane, and courses along the dorsum of the clitoral body.
The vestibule of the vagina is the almond-shaped space bounded by the labia minora laterally. It contains the urethral meatus anteriorly and the vaginal orifice posteriorly, along with the openings of Bartholin and Skene's glands. The clitoris lies anterior to the vestibule.
The lactiferous sinuses are dilated portions of the lactiferous ducts located just deep to the areola. They serve as milk reservoirs during lactation. Each of the 15–20 lobes of the breast drains via a lactiferous duct that dilates into a sinus before opening at the nipple.
The urogenital diaphragm (deep perineal pouch) has two fascial layers: the superior fascia (roof) and the perineal membrane or inferior fascia (floor). The space between them is the deep perineal pouch. Colles' fascia is the membranous layer of the superficial perineal fascia.
The inferior epigastric artery runs along the posterior surface of the rectus abdominis and is at risk during retropubic procedures (e.g., Burch colposuspension, TVT). The external iliac vessels are also at risk when placing sutures into Cooper's ligament. The obturator neurovascular bundle can be injured during pelvic lymphadenectomy.
During the descent of the testis, layers of the anterior abdominal wall contribute to the coverings of the spermatic cord. The external spermatic fascia is derived from the external oblique aponeurosis. The cremasteric fascia comes from the internal oblique, and the internal spermatic fascia from the transversalis fascia.
The femoral nerve (L2–L4) is the most commonly injured nerve during the McRoberts maneuver (extreme hyperflexion and abduction of the maternal thighs). The nerve is compressed behind the inguinal ligament. This typically results in transient weakness of hip flexion and knee extension.
The normal adult female bladder capacity is approximately 400–600 mL, with the first sensation of filling occurring at around 150–200 mL and a moderate desire to void at 250–400 mL. During pregnancy, bladder capacity is reduced due to compression by the gravid uterus.
The endometrium (along with the uterine body) drains primarily to the internal iliac (hypogastric) lymph nodes. Some drainage from the fundus also goes to the para-aortic nodes along the ovarian vessels. The cervix drains to obturator and internal iliac nodes.
The deep inguinal ring transmits the round ligament of the uterus in females (and the spermatic cord in males). The round ligament passes through both deep and superficial inguinal rings to reach the labium majus. The ovarian and suspensory ligaments do not enter the inguinal canal.
The bregma is the point where the sagittal suture meets the coronal sutures. It is the location of the anterior (frontal) fontanelle, which is diamond-shaped and typically closes around 18–24 months of age. The lambda is where the sagittal meets the lambdoid sutures (posterior fontanelle).
The pelvic ureter runs close to the uterine artery (passing under it), the lateral vaginal fornix (approximately 1.5 cm lateral), the broad ligament (running in extraperitoneal tissue beneath it), and the lateral aspect of the rectum. It is not directly adjacent to the ovary, which is more superior and lateral.
The axillary tail of Spence (or tail of Spence) is an extension of breast tissue from the upper outer quadrant that passes through the axillary fascia (foramen of Langer) into the axilla. It is clinically important because it can be mistaken for axillary lymphadenopathy and can be involved in breast cancer.
In a modified radical mastectomy (Patey procedure), the pectoralis major muscle is preserved and the pectoralis minor is removed to provide access to the axillary lymph nodes. The classic radical mastectomy (Halsted) removes both pectoralis muscles. Simple mastectomy removes breast tissue only.
In the neonate, the cervix is approximately twice the length of the uterine corpus (2:1 ratio). This reverses during childhood, and by puberty, the corpus is approximately twice the length of the cervix (2:1 ratio), which persists through reproductive years. After menopause, the ratio returns toward 1:1.
The ilioinguinal nerve (L1) passes through the superficial inguinal ring in both males and females. In females, it supplies the skin of the mons pubis and the anterior part of the labium majus. In males, it supplies the root of the penis and scrotum.
The sacrococcygeal joint is a symphysis (secondary cartilaginous joint/amphiarthrosis), connected by a fibrocartilaginous disc and ligaments. It allows limited movement, which increases during pregnancy under hormonal influence. This mobility may contribute to coccydynia and is important for the passage of the fetal head during delivery.
The round ligament of the uterus receives its blood supply from the artery of the round ligament (Sampson's artery), which is a branch of the inferior epigastric artery (a branch of the external iliac artery). This vessel runs within the round ligament and anastomoses with the ovarian and uterine arteries.
The pelvic splanchnic nerves (nervi erigentes) arise from the anterior rami of S2–S4 and carry parasympathetic preganglionic fibers to the pelvic ganglia (inferior hypogastric plexus). They are responsible for penile/clitoral erection, bladder emptying, and rectal evacuation. Sympathetic fibers reach the pelvis via the hypogastric nerves.
The adult female breast typically contains 15–20 lobes, each consisting of multiple lobules and drained by a single lactiferous duct. Each lactiferous duct dilates into a lactiferous sinus before opening onto the nipple. The lobes are separated by fibrous septa (Cooper's ligaments).
The inferior hypogastric plexus (pelvic plexus) is located on each side of the pelvis adjacent to the rectal ampulla, the lateral vaginal fornices, and the base of the bladder. It contains both sympathetic and parasympathetic fibers and gives rise to innervation of the pelvic viscera. It is at risk during radical hysterectomy, potentially causing bladder dysfunction.
Hesselbach's triangle is bounded laterally by the inferior epigastric vessels, medially by the lateral border of the rectus abdominis, and inferiorly by the inguinal ligament. Direct inguinal hernias protrude through this triangle, medial to the inferior epigastric vessels, while indirect hernias emerge lateral to them.
The anastomosis between the ascending branch of the uterine artery and the ovarian artery at the cornual region of the uterus provides important collateral circulation. This means that if the uterine artery is ligated (during myomectomy or postpartum hemorrhage), the uterus can still receive blood supply from the ovarian artery, helping preserve fertility.
The female breast receives sensory innervation primarily from the anterior and lateral cutaneous branches of the second through sixth intercostal nerves (T2–T6). The T4 intercostal nerve supplies the areolar region. The supraclavicular nerves (from the cervical plexus, C3–C4) supply the superior aspect of the breast.
The fossa navicularis is the boat-shaped depression in the vestibule between the hymen and the posterior fourchette (frenulum of the labia minora). It is more prominent in virginal females and becomes less distinct after childbirth. The term is sometimes also used for the Navicular fossa of the male urethra.
The pelvic ureter crosses the pelvic brim near the bifurcation of the common iliac artery, runs laterally to the ovary in the ovarian fossa, passes approximately 2 cm lateral to the supravaginal cervix beneath the uterine artery ("water under the bridge"), and then courses anteromedially to enter the posterolateral bladder wall.

Mock Exam 08

Mock Exam 08 — Anatomy

MRCOG Part 1 practice — 100 single best answer questions with answers and explanations.

📘 Q1 (Anatomy) — Which of the following bones forms the anterior boundary of the pelvic inlet? A) Sacrum B) Coccyx C) Pubic symphysis D) Ischial spine E) Iliac crest

Answer: C

The pelvic inlet (superior pelvic aperture) is bounded anteriorly by the pubic symphysis and the pubic crest, laterally by the iliopectineal lines, and posteriorly by the sacral promontory and alae of the sacrum. The pubic symphysis is a midline cartilaginous joint connecting the two pubic bones.

📘 Q2 (Anatomy) — The obstetrical conjugate of the pelvis is measured from which point to which point? A) Sacral promontory to the midpoint of the pubic symphysis B) Sacral promontory to the superior border of the pubic symphysis C) Sacral promontory to the inferior border of the pubic symphysis D) Coccyx to the pubic symphysis E) Ischial spine to the contralateral ischial spine

Answer: C

The obstetrical conjugate (true conjugate or conjugata vera) is the shortest diameter of the pelvic inlet, measured from the sacral promontory to the most prominent posterior aspect of the pubic symphysis (its inferior border). It is the most clinically relevant measurement, normally about 10.5–11 cm.

📘 Q3 (Anatomy) — Which type of female pelvis is most commonly associated with a transverse oval-shaped inlet and is considered most favorable for vaginal delivery? A) Android pelvis B) Anthropoid pelvis C) Gynecoid pelvis D) Platypelloid pelvis E) Mixed pelvis

Answer: C

The gynecoid pelvis is the classic female pelvic shape, found in about 50% of women. It has a round to transverse oval inlet, well-curved sacrum, rounded pelvic sidewalls, and a wide pubic arch — all features that favor vaginal delivery. The android pelvis is male-like and associated with obstructed labor.

📘 Q4 (Anatomy) — The levator ani muscle is innervated by which nerve? A) Pudendal nerve B) Nerve to levator ani (S3–S4 branches) C) Inferior rectal nerve D) Obturator nerve E) Pelvic splanchnic nerves

Answer: B

The levator ani is primarily innervated by direct branches from the sacral plexus (S3–S4), often called the nerve to levator ani. The pudendal nerve (S2–S4) supplies the external anal sphincter and perineal muscles but does not directly innervate the levator ani. Pelvic splanchnic nerves carry parasympathetic fibers.

📘 Q5 (Anatomy) — Which layer of the anterior abdominal wall contains the deep inguinal ring? A) Skin and subcutaneous tissue B) External oblique aponeurosis C) Internal oblique muscle D) Transversalis fascia E) Extraperitoneal fat

Answer: D

The deep inguinal ring is an opening in the transversalis fascia located approximately 1.25 cm above the midpoint of the inguinal ligament. It marks the beginning of the inguinal canal. The superficial ring lies in the external oblique aponeurosis.

📘 Q6 (Anatomy) — The ureter passes under which structure as it enters the pelvis? A) Ovarian artery B) Uterine artery C) Round ligament of the uterus D) Obturator artery E) Vaginal artery

Answer: B

As the ureter enters the pelvis, it passes beneath the uterine artery approximately 2 cm lateral to the supravaginal cervix — a relationship famously described as "water under the bridge." This is of immense surgical importance during hysterectomy to avoid accidental ureteric ligation or injury.

📘 Q7 (Anatomy) — The ovarian artery is a direct branch of which vessel? A) Internal iliac artery B) External iliac artery C) Abdominal aorta D) Renal artery E) Superior mesenteric artery

Answer: C

The ovarian arteries arise directly from the abdominal aorta, just below the renal arteries (at the level of L2). They cross the pelvic brim with the ureters to supply the ovaries and also anastomose with terminal branches of the uterine artery.

📘 Q8 (Anatomy) — During an episiotomy, which muscle is most commonly incised? A) Bulbospongiosus B) Ischiocavernosus C) Transversus perinei superficialis D) Pubococcygeus E) External anal sphincter

Answer: C

A mediolateral episiotomy typically incises the superficial transverse perineal muscle along with the skin and vaginal mucosa. The bulbospongiosus and ischiocavernosus are more anterior. The external anal sphincter can be involved if the episiotomy extends, but the primary muscle incised is the transversus perinei superficialis.

📘 Q9 (Anatomy) — Which lymph nodes are the primary drainage site for the cervix? A) Inguinal lymph nodes B) Para-aortic lymph nodes C) Obturator and internal iliac lymph nodes D) External iliac lymph nodes E) Superficial inguinal lymph nodes

Answer: C

The cervix drains primarily to the obturator and internal iliac (hypogastric) lymph nodes. From there, drainage proceeds to the common iliac and para-aortic nodes. The inguinal nodes drain the vulva and lower vagina. The para-aortic nodes become involved in advanced disease.

📘 Q10 (Anatomy) — The round ligament of the uterus is the remnant of which embryonic structure? A) Urachus B) Gubernaculum C) Mesonephric duct D) Paramesonephric duct E) Sinus tubercle

Answer: B

The round ligament of the uterus is derived from the gubernaculum, which in the female connects the ovary to the labium majus. The portion from the uterus to the labium majus becomes the round ligament, while the portion from the ovary to the uterus becomes the ovarian ligament.

📘 Q11 (Anatomy) — The pudendal nerve exits the pelvis through which foramen? A) Obturator foramen B) Greater sciatic foramen C) Lesser sciatic foramen D) Sacral hiatus E) Suprapiriform foramen

Answer: B

The pudendal nerve (S2–S4) exits the pelvis through the greater sciatic foramen, passes posterior to the sacrospinous ligament (or between the sacrospinous and sacrotuberous ligaments), and then re-enters the pelvis through the lesser sciatic foramen to enter the pudendal (Alcock's) canal.

📘 Q12 (Anatomy) — The hymenal opening in a virginal female is typically: A) Annular B) Crescentic C) Septate D) Imperforate E) Cribriform

Answer: B

The crescentic (semilunar) hymen is the most common type in virginal women, with an opening located anteriorly. An annular (circumferential) hymen has a central opening and is also common. Imperforate, septate, and cribriform hymens are variations that may require surgical correction.

📘 Q13 (Anatomy) — Which layer of the uterus is shed during menstruation? A) Basalis layer of the endometrium B) Functional layer of the endometrium C) Myometrium — inner layer D) Myometrium — outer layer E) Perimetrium

Answer: B

The functional layer (stratum functionalis) of the endometrium is the superficial two-thirds that proliferates under estrogen, undergoes secretory changes under progesterone, and is shed during menstruation. The basalis layer (stratum basalis) remains intact and serves as the regenerative layer.

📘 Q14 (Anatomy) — The angle of the urethra relative to the vertical in a standing woman is approximately: A) 10 degrees B) 30 degrees C) 45 degrees D) 60 degrees E) 90 degrees

Answer: B

The female urethra courses at approximately a 30-degree angle posteriorly relative to the vertical. This angulation, along with the external urethral sphincter and the pubovesical ligaments, contributes to urinary continence. Significant loss of this angle may contribute to stress incontinence.

📘 Q15 (Anatomy) — Which of the following structures is NOT found within the broad ligament of the uterus? A) Uterine tube B) Round ligament C) Ovarian ligament D) Ureter E) Epoophoron

Answer: D

The broad ligament contains the uterine tube, round ligament, ovarian ligament, and vestigial remnants (epoophoron, paroophoron). The ureter runs in the extraperitoneal connective tissue below the broad ligament, passing close to the supravaginal cervix — it is not within the broad ligament itself.

📘 Q16 (Anatomy) — The lymphatic drainage of the vulva primarily goes to which nodal group? A) Deep inguinal nodes B) Superficial inguinal nodes C) Internal iliac nodes D) Obturator nodes E) Para-aortic nodes

Answer: B

The vulva (labia, clitoris, and perineal skin) drains primarily to the superficial inguinal lymph nodes. From there, drainage proceeds to the deep inguinal nodes and then to the external iliac nodes. The labia minora may also drain directly to the external iliac nodes.

📘 Q17 (Anatomy) — The ischial spine is an important landmark for which pelvic measurement? A) Obstetric conjugate B) Diagonal conjugate C) Interspinous diameter D) Transverse diameter of the inlet E) Anteroposterior diameter of the outlet

Answer: C

The interspinous diameter (normal ~10.5 cm) is the transverse diameter of the midpelvis measured between the two ischial spines. It is the smallest diameter of the pelvic cavity and is a critical determinant of successful vaginal delivery. Narrowing (<9.5 cm) suggests midpelvic contraction.

📘 Q18 (Anatomy) — The sacral promontory is located at the level of which vertebral body? A) L4 B) L5 C) S1 D) S2 E) L3

Answer: C

The sacral promontory is the anterior projection of the body of the first sacral vertebra (S1) at its junction with the L5 vertebra. It forms the posterior-most bony landmark of the pelvic inlet and is palpated during clinical pelvimetry.

📘 Q19 (Anatomy) — Which nerve provides the dominant motor supply to the diaphragm? A) Phrenic nerve (C3–C5) B) Vagus nerve C) Intercostal nerves D) Sympathetic trunk E) Accessory phrenic nerve

Answer: A

The phrenic nerve (C3–C5) provides the exclusive motor supply to the diaphragm. The accessory phrenic nerve (from C5, often a branch of the nerve to subclavius) is inconstant and only contributes a small portion. The vagus and sympathetic nerves carry only sensory fibers to the diaphragm.

📘 Q20 (Anatomy) — Which of the following muscles forms the lateral boundary of the pelvic outlet? A) Piriformis B) Obturator internus C) Coccygeus D) Levator ani E) Quadratus lumborum

Answer: B

The pelvic outlet is bounded laterally by the ischial tuberosities and the obturator internus muscles covering the lateral pelvic walls. The piriformis forms the posterior boundary, while the pubic arch forms the anterior boundary. The levator ani and coccygeus form the pelvic floor.

📘 Q21 (Anatomy) — The fimbriae of the uterine tube are responsible for: A) Propelling sperm toward the ovary B) Capturing the ovum after ovulation C) Providing nutrition to the zygote D) Secreting estrogen E) Anchoring the ovary to the broad ligament

Answer: B

The fimbriae are finger-like projections at the infundibulum of the uterine tube that sweep over the ovarian surface at ovulation, creating currents in the peritoneal fluid that draw the ovum into the tube. Fertilization normally occurs in the ampulla of the tube.

📘 Q22 (Anatomy) — The para-aortic lymph nodes receive drainage directly from which pelvic structure? A) Cervix B) Ovaries C) Upper vagina D) Vulva E) Lower rectum

Answer: B

The ovaries drain lymph directly to the para-aortic (lumbar) lymph nodes, following the ovarian vessels upward. This is why ovarian cancer can spread to para-aortic nodes even in early stages, without involving the pelvic nodal groups. The cervix, upper vagina, and vulva drain to pelvic nodes first.

📘 Q23 (Anatomy) — During development, the uterus is formed by fusion of which structures? A) Mesonephric ducts B) Paramesonephric ducts (Müllerian ducts) C) Urogenital sinus D) Metanephric diverticula E) Pronephric ducts

Answer: B

The uterus, uterine tubes, and upper two-thirds of the vagina are derived from the paramesonephric (Müllerian) ducts, which fuse in the midline to form the uterine canal. Failure of fusion leads to Müllerian anomalies such as bicornuate or didelphys uterus.

📘 Q24 (Anatomy) — The artery that most commonly supplies the ureter in its pelvic portion is: A) Ovarian artery B) Uterine artery C) Superior vesical artery D) Middle rectal artery E) Internal pudendal artery

Answer: B

The pelvic portion of the ureter receives its blood supply from branches of the uterine artery (most important), the superior vesical artery (inferior part), and sometimes the middle rectal artery. The ovarian artery supplies the abdominal portion of the ureter. The blood supply runs in the adventitia.

📘 Q25 (Anatomy) — Which of the following joints of the pelvis undergoes the most significant relaxation during pregnancy? A) Lumbosacral joint B) Sacrococcygeal joint C) Pubic symphysis D) Sacroiliac joint E) Hip joint

Answer: D

The sacroiliac joints undergo the most significant hormonal relaxation during pregnancy due to the effects of relaxin and estrogen. This increases pelvic mobility and anteroposterior diameter. The pubic symphysis also relaxes but to a lesser degree. This relaxation can contribute to pelvic girdle pain.

📘 Q26 (Anatomy) — The vermiform appendix is located in relation to the female pelvic organs. In a pregnant woman at term, the appendix is typically displaced to which quadrant? A) Left upper quadrant B) Right upper quadrant C) Left lower quadrant D) Right lower quadrant (unchanged) E) Pelvis

Answer: B

As the uterus enlarges during pregnancy, the appendix is displaced upward and laterally. By term (40 weeks), the appendix is commonly located in the right upper quadrant, near the gallbladder. This makes the diagnosis of appendicitis in pregnancy challenging and may present with right upper quadrant pain.

📘 Q27 (Anatomy) — The nerve supply to the external anal sphincter is from: A) Pelvic splanchnic nerves (S2–S4) B) Inferior rectal nerve (branch of pudendal nerve) C) Perineal branch of S4 D) Ilioinguinal nerve E) Genitofemoral nerve

Answer: B

The external anal sphincter is a striated voluntary muscle innervated by the inferior rectal nerve (a branch of the pudendal nerve, S2–S4). The pudendal nerve also supplies the sphincter via its perineal branch. The internal anal sphincter (smooth muscle) is innervated by autonomic fibers.

📘 Q28 (Anatomy) — The ovarian ligament connects: A) Ovary to the uterine fundus B) Ovary to the lateral pelvic wall C) Ovary to the broad ligament D) Ovary to the fimbriae E) Ovary to the round ligament

Answer: A

The ovarian ligament (ligament of the ovary) extends from the inferior pole of the ovary to the lateral angle of the uterus, just below the uterotubal junction. It is a remnant of the gubernaculum and lies within the broad ligament. The suspensory ligament of the ovary attaches the ovary to the pelvic wall.

📘 Q29 (Anatomy) — Which of the following is a direct branch of the anterior division of the internal iliac artery? A) Iliolumbar artery B) Lateral sacral artery C) Superior gluteal artery D) Obturator artery E) Inferior gluteal artery

Answer: D

The anterior division of the internal iliac artery gives off the umbilical artery (which becomes the medial umbilical ligament postnatally), superior vesical, inferior vesical, uterine, vaginal, middle rectal, obturator (often from the external iliac though), and internal pudendal arteries. The posterior division gives off the iliolumbar, lateral sacral, and superior gluteal arteries.

📘 Q30 (Anatomy) — The inguinal canal in females contains which of the following structures? A) Spermatic cord B) Round ligament of the uterus C) Ovarian artery D) Ureter E) Uterine tube

Answer: B

In females, the inguinal canal contains the round ligament of the uterus, the ilioinguinal nerve, and the genital branch of the genitofemoral nerve. In males, it contains the spermatic cord (vas deferens, testicular vessels, etc.). The round ligament passes through the inguinal canal to insert into the labium majus.

📘 Q31 (Anatomy) — Which part of the uterine tube is the most common site for ectopic pregnancy? A) Infundibulum B) Ampulla C) Isthmus D) Intramural (interstitial) part E) Fimbriae

Answer: B

The ampulla is the widest and longest part of the uterine tube and is the most common site for ectopic pregnancy (approximately 70% of cases). Fertilization normally occurs here. The isthmus is the next most common site, while interstitial (cornual) ectopics are rare but more dangerous.

📘 Q32 (Anatomy) — The nerve that supplies the skin of the upper medial thigh and the labia majora (anterior part) is: A) Genitofemoral nerve B) Ilioinguinal nerve C) Obturator nerve D) Femoral branch of genitofemoral nerve E) Lateral femoral cutaneous nerve

Answer: A

The genitofemoral nerve (L1–L2) supplies the skin of the anterior upper medial thigh via its femoral branch and the labia majora (or scrotum in males) via its genital branch. The ilioinguinal nerve (L1) supplies the mons pubis and the anterior part of the labia majora.

📘 Q33 (Anatomy) — During a posterior colporrhaphy, which anatomical compartment is being repaired? A) Anterior vaginal wall — cystocele B) Posterior vaginal wall — rectocele C) Vaginal apex — vault prolapse D) Urethrovesical junction E) Enterocele

Answer: B

A posterior colporrhaphy repairs a rectocele, which is herniation of the rectum into the posterior vaginal wall. This involvesplication of the rectovaginal fascia (Denonvilliers' fascia) and the levator ani muscles. An anterior colporrhaphy repairs a cystocele.

📘 Q34 (Anatomy) — The structure that separates the urogenital triangle from the anal triangle is: A) Pubococcygeus muscle B) Transverse perineal muscles C) Ischial tuberosities D) Ischial spines E) Sacrotuberous ligament

Answer: C

The perineum is diamond-shaped, bounded anteriorly by the pubic symphysis, laterally by the ischial tuberosities, and posteriorly by the coccyx. A transverse line connecting the two ischial tuberosities divides it into the anterior urogenital triangle and the posterior anal triangle.

📘 Q35 (Anatomy) — The lymphatic drainage of the breast from the medial quadrant primarily goes to: A) Axillary lymph nodes B) Internal mammary (parasternal) lymph nodes C) Supraclavicular lymph nodes D) Interpectoral lymph nodes E) Posterior intercostal lymph nodes

Answer: B

The medial quadrants of the breast drain primarily to the internal mammary (parasternal) lymph nodes, which run along the internal thoracic artery. The lateral quadrants drain primarily to the axillary nodes. The supraclavicular nodes receive drainage from the apical axillary nodes.

📘 Q36 (Anatomy) — The rectus sheath above the arcuate line consists of which layers? A) Anterior: external oblique aponeurosis; Posterior: internal oblique aponeurosis and transversus abdominis aponeurosis B) Anterior: external oblique + internal oblique aponeuroses; Posterior: transversus abdominis aponeurosis C) Anterior: external oblique + internal oblique + transversus abdominis aponeuroses; Posterior: transversalis fascia only D) Anterior: external oblique aponeurosis only; Posterior: internal oblique + transversus abdominis aponeuroses E) Anterior: external oblique + internal oblique aponeuroses; Posterior: transversalis fascia only

Answer: A

Above the arcuate line (approximately midway between umbilicus and pubic symphysis), the anterior rectus sheath is formed by the external oblique aponeurosis alone, and the posterior rectus sheath is formed by the fused aponeuroses of the internal oblique and transversus abdominis. Below the arcuate line, all three aponeuroses pass anterior to the rectus, leaving only transversalis fascia posteriorly.

📘 Q37 (Anatomy) — The Bartholin glands (greater vestibular glands) are located in which anatomical space? A) Superficial perineal pouch B) Deep perineal pouch C) Ischiorectal fossa D) Retropubic space (of Retzius) E) Rectovesical pouch

Answer: A

The Bartholin glands (greater vestibular glands) lie in the superficial perineal pouch, one on each side of the vaginal orifice, deep to the bulbospongiosus muscle. They produce mucus during sexual arousal. Their ducts open into the posterolateral aspect of the vaginal vestibule.

📘 Q38 (Anatomy) — During a pudendal nerve block, the local anesthetic is most effectively deposited near which structure? A) Ischial tuberosity B) Ischial spine C) Sacral promontory D) Pubic symphysis E) Coccyx

Answer: B

The pudendal nerve block is performed by depositing local anesthetic near the ischial spine, as the nerve wraps around the sacrospinous ligament just posterior to the spine. A transvaginal approach guides the needle to this landmark. This block provides anesthesia to the perineum for operative vaginal delivery.

📘 Q39 (Anatomy) — The urachus is a remnant of which embryonic structure? A) Vitelline duct B) Allantois C) Mesonephric duct D) Urogenital sinus E) Cloaca

Answer: B

The urachus is a remnant of the allantois, a diverticulum from the yolk sac that projects into the connecting stalk. After birth, it becomes the median umbilical ligament, a fibrous cord running from the bladder apex to the umbilicus. A patent urachus can cause urine leakage from the umbilicus.

📘 Q40 (Anatomy) — Which of the following ligaments is most important for maintaining uterine anteversion? A) Round ligament B) Uterosacral ligament C) Broad ligament D) Transverse cervical ligament (Mackenrodt's) E) Ovarian ligament

Answer: A

The round ligament of the uterus helps maintain uterine anteversion by pulling the uterine fundus forward. The uterosacral ligaments pull the cervix posteriorly, contributing to anteversion as well. The transverse cervical ligaments (cardinal ligaments) are the primary supports preventing uterine prolapse.

📘 Q41 (Anatomy) — The vagina is lined by what type of epithelium? A) Stratified squamous, non-keratinized B) Stratified squamous, keratinized C) Simple columnar D) Pseudostratified columnar E) Transitional epithelium

Answer: A

The vagina is lined by stratified squamous non-keratinized epithelium, which is estrogen-sensitive. It undergoes cyclical changes during the menstrual cycle and shows maturation in response to estrogen. The ectocervix is also covered by this epithelium, while the endocervix has simple columnar epithelium.

📘 Q42 (Anatomy) — The maximum transverse diameter of the pelvic inlet is normally approximately: A) 10.5 cm B) 11.5 cm C) 13.5 cm D) 12.5 cm E) 9.5 cm

Answer: C

The transverse diameter of the pelvic inlet (the widest distance between the iliopectineal lines on each side) normally measures approximately 13.0–13.5 cm. The anteroposterior diameters (obstetric conjugate ~10.5–11 cm, diagonal conjugate ~12–12.5 cm) are smaller.

📘 Q43 (Anatomy) — The retropubic space (space of Retzius) is located between: A) Bladder and uterus B) Pubic symphysis and bladder C) Rectum and vagina D) Uterus and rectum E) Bladder and vagina

Answer: B

The retropubic space (of Retzius) is an extraperitoneal space between the pubic symphysis (anteriorly) and the urinary bladder (posteriorly). It contains loose areolar tissue and the retropubic venous plexus. It is surgically entered during retropubic sling procedures and cystectomy.

📘 Q44 (Anatomy) — Which of the following is NOT a branch of the internal iliac artery? A) Superior gluteal artery B) Inferior gluteal artery C) Obturator artery D) Inferior epigastric artery E) Internal pudendal artery

Answer: D

The inferior epigastric artery is a branch of the external iliac artery, not the internal iliac artery. It arises just above the inguinal ligament and runs superomedially to enter the rectus sheath. The superior and inferior gluteal arteries, obturator artery, and internal pudendal artery are all branches of the internal iliac artery.

📘 Q45 (Anatomy) — The apex of the bladder is connected to the umbilicus by which structure? A) Lateral umbilical ligament B) Median umbilical ligament C) Medial umbilical ligament D) Round ligament E) Urachal ligament

Answer: B

The median umbilical ligament runs from the apex of the bladder to the umbilicus and is the remnant of the urachus (allantois). The medial umbilical ligaments are remnants of the umbilical arteries, and the lateral umbilical ligaments contain the inferior epigastric vessels.

📘 Q46 (Anatomy) — The iliopectineal line forms part of the boundary of which pelvic structure? A) Pelvic outlet B) Pelvic inlet (pelvic brim) C) Obturator canal D) Sciatic foramen E) Pubic arch

Answer: B

The iliopectineal line is the bony ridge that runs from the sacral promontory, along the ala of the sacrum and the arcuate line of the ilium, to the pecten pubis (pectineal line of the pubis). It forms the lateral boundary of the pelvic inlet (pelvic brim).

📘 Q47 (Anatomy) — Cowper's glands (bulbourethral glands) in the male are homologous to which structure in the female? A) Bartholin glands (greater vestibular glands) B) Skene's glands (paraurethral glands) C) Labia minora D) Clitoris E) Fallopian tubes

Answer: A

The bulbourethral glands (Cowper's glands) in males are homologous to the greater vestibular glands (Bartholin glands) in females. Both develop from the urogenital sinus and produce mucus. Skene's glands are homologous to the male prostate.

📘 Q48 (Anatomy) — During fetal development, the testis descends through the abdominal wall guided by which structure? A) Processus vaginalis B) Gubernaculum C) Spermatic cord D) Vas deferens E) Cremasteric muscle

Answer: B

The gubernaculum is a fibromuscular cord that guides the testis through the inguinal canal into the scrotum. It shortens during fetal development, pulling the testis downward. The processus vaginalis is a peritoneal outpouching that precedes the testis and later becomes the tunica vaginalis.

📘 Q49 (Anatomy) — The left ovarian vein drains into which vessel? A) Left internal iliac vein B) Left renal vein C) Inferior vena cava D) Left common iliac vein E) Superior mesenteric vein

Answer: B

The left ovarian vein drains into the left renal vein at a right angle, while the right ovarian vein drains directly into the inferior vena cava. This anatomical difference predisposes to left-sided ovarian vein syndrome and may contribute to left-sided varicocele in males (left testicular vein).

📘 Q50 (Anatomy) — The deep perineal pouch in females contains which of the following structures? A) Bulbospongiosus muscle B) Ischiocavernosus muscle C) External urethral sphincter D) Bartholin glands E) Corpus spongiosum

Answer: C

The deep perineal pouch (urogenital diaphragm) contains the external urethral sphincter, the deep transverse perineal muscle, the urethra, the vagina, and the dorsal nerves and vessels of the clitoris. The superficial perineal pouch contains the bulbospongiosus, ischiocavernosus, superficial transverse perineal muscles, and Bartholin glands.

📘 Q51 (Anatomy) — The nerve that supplies the majority of the skin over the perineum (posterior part) is: A) Ilioinguinal nerve B) Genitofemoral nerve C) Posterior femoral cutaneous nerve D) Pudendal nerve E) Obturator nerve

Answer: C

The posterior femoral cutaneous nerve (S1–S3) supplies the skin of the posterior thigh and the posterior aspect of the perineum (the perineal branches). The pudendal nerve supplies the external genitalia via its perineal branch. The ilioinguinal and genitofemoral nerves supply the anterior perineum.

📘 Q52 (Anatomy) — During a Cesarean section, the bladder is often found to be adherent to the lower uterine segment. The normal anatomical relationship is that the bladder is separated from the lower uterine segment by which peritoneal reflection? A) Broad ligament B) Uterovesical fold of peritoneum C) Rectovesical pouch D) Pouch of Douglas (rectouterine pouch) E) Vesicouterine pouch

Answer: E

The vesicouterine pouch is the peritoneal reflection between the bladder and the uterus. The uterus is covered anteriorly by peritoneum down to the level of the isthmus, where it reflects onto the bladder forming this pouch. During Cesarean section, the vesicouterine pouch is incised to access the lower uterine segment and displace the bladder downward.

📘 Q53 (Anatomy) — The female external urethral meatus is located: A) Anterior to the clitoris B) Between the clitoris and the vaginal orifice C) Posterior to the vaginal orifice D) Within the anterior vaginal wall E) At the vaginal fornix

Answer: B

The female external urethral meatus is located in the vestibule between the clitoris anteriorly and the vaginal orifice posteriorly. It is approximately 2–3 cm posterior to the clitoral glans. Skene's glands (paraurethral glands) open on either side of the external urethral meatus.

📘 Q54 (Anatomy) — Which of the following muscles is NOT part of the pelvic floor? A) Pubococcygeus B) Iliococcygeus C) Ischiococcygeus (coccygeus) D) Obturator internus E) Puborectalis

Answer: D

The pelvic floor is composed of the levator ani (pubococcygeus, iliococcygeus, and puborectalis) and the coccygeus (ischiococcygeus) muscles. The obturator internus is a muscle of the lateral pelvic wall, not part of the pelvic floor, though its fascia provides attachment for the levator ani.

📘 Q55 (Anatomy) — The suspensory ligament of the ovary contains which of the following vessels? A) Uterine artery and vein B) Ovarian artery and vein C) Superior vesical artery D) Inferior epigastric artery E) Internal pudendal artery

Answer: B

The suspensory ligament of the ovary (infundibulopelvic ligament) extends from the ovary to the lateral pelvic wall and contains the ovarian artery and vein, lymphatics, and nerves. It is a fold of peritoneum and is surgically important during oophorectomy.

📘 Q56 (Anatomy) — The pubocervical ligament (pubocervical fascia) extends from the pubic symphysis to the: A) Cervix and vaginal fornices B) Sacrum C) Uterine fundus D) Ischial spine E) Uterosacral ligament

Answer: A

The pubocervical ligament (pubocervical fascia) is a sheet of connective tissue extending from the posterior surface of the pubic bones to the anterior aspect of the cervix and upper vagina. It helps support the bladder and anterior vaginal wall. Its weakness contributes to cystocele formation.

📘 Q57 (Anatomy) — The obturator nerve (L2–L4) provides motor innervation to which muscle group? A) Gluteal muscles B) Medial compartment of the thigh (adductors) C) Anterior compartment of the thigh D) Posterior compartment of the thigh E) Pelvic floor muscles

Answer: B

The obturator nerve (L2–L4) supplies the muscles of the medial compartment of the thigh: adductor longus, adductor brevis, adductor magnus (adductor part), gracilis, and obturator externus. It also provides sensory innervation to the medial thigh. In O&G, it can be injured during pelvic surgery.

📘 Q58 (Anatomy) — The normal angle of the subpubic arch in a gynecoid pelvis is: A) < 60 degrees B) 60–70 degrees C) 80–85 degrees D) 90–100 degrees E) > 100 degrees

Answer: C

The subpubic arch in a gynecoid pelvis is wide, typically 80–85 degrees. A narrow arch (<70 degrees, as in the android pelvis) is associated with a narrowed pelvic outlet and increased risk of obstructed labor. The wide arch allows easier passage of the fetal head.

📘 Q59 (Anatomy) — The termination of the spinal cord (conus medullaris) in adults is typically at the level of: A) L1–L2 B) L3–L4 C) L4–L5 D) S1–S2 E) T12–L1

Answer: A

The conus medullaris (the tapered end of the spinal cord) in adults typically lies at the level of the L1–L2 vertebral interspace. Below this, the nerve roots form the cauda equina within the dural sac. This is important for spinal and epidural anesthesia in obstetric practice.

📘 Q60 (Anatomy) — The rectovaginal septum (Denonvilliers' fascia) is a layer of fascia that separates: A) Vagina and urethra B) Rectum and posterior vaginal wall C) Bladder and anterior vaginal wall D) Uterus and bladder E) Rectum and sacrum

Answer: B

Denonvilliers' fascia (rectovaginal septum) is a fibromuscular layer separating the rectum from the posterior vaginal wall. It extends from the peritoneum of the pouch of Douglas superiorly to the perineal body inferiorly. It is an important surgical plane during rectocele repair and posterior colporrhaphy.

📘 Q61 (Anatomy) — The space of Douglas (rectouterine pouch) is the: A) Space between the bladder and uterus B) Most dependent part of the peritoneal cavity in females C) Space between the rectum and sacrum D) Space between the vaginal wall and bladder E) Space between the levator ani muscles

Answer: B

The rectouterine pouch (pouch of Douglas) is the most dependent part of the peritoneal cavity in females when standing or sitting. It lies between the rectum posteriorly and the uterus and posterior vaginal fornix anteriorly. Fluid collections (blood, pus, ascites) tend to accumulate here and can be aspirated via posterior colpotomy.

📘 Q62 (Anatomy) — The blood supply to the fallopian tube comes primarily from: A) Ovarian artery and uterine artery B) Vaginal artery and superior vesical artery C) Internal pudendal artery D) Inferior epigastric artery E) Middle rectal artery

Answer: A

The fallopian tubes receive their blood supply from the tubal branches of both the uterine artery (medially) and the ovarian artery (laterally). These vessels anastomose within the mesosalpinx, providing a rich blood supply. The venous drainage parallels the arterial supply.

📘 Q63 (Anatomy) — The anterior division of the internal iliac artery gives rise to all of the following EXCEPT: A) Uterine artery B) Internal pudendal artery C) Obturator artery D) Lateral sacral artery E) Middle rectal artery

Answer: D

The lateral sacral artery is a branch of the posterior division of the internal iliac artery. The anterior division gives off the umbilical, superior vesical, inferior vesical, uterine, vaginal, middle rectal, internal pudendal, and usually the obturator arteries.

📘 Q64 (Anatomy) — The perineal body is clinically important because it: A) Contains the urethral sphincter B) Provides attachment for the pelvic floor muscles and is a site for episiotomy C) Is the location of Bartholin glands D) Contains the neurovascular bundle to the clitoris E) Marks the location of the hymen

Answer: B

The perineal body is a fibromuscular mass in the midline between the anus and the vagina. It provides attachment for the bulbospongiosus, superficial and deep transverse perineal muscles, pubococcygeus, and external anal sphincter. It is a key structure in episiotomy repair and perineal reconstruction. Damage contributes to pelvic organ prolapse.

📘 Q65 (Anatomy) — The spermatic cord in the male inguinal canal contains all of the following EXCEPT: A) Vas deferens B) Testicular artery C) Pampiniform plexus of veins D) Cremasteric artery E) Inferior epigastric artery

Answer: E

The inferior epigastric artery is not in the spermatic cord — it runs in the lateral umbilical fold medial to the deep inguinal ring. The spermatic cord contains the vas deferens, testicular artery, pampiniform plexus, cremasteric artery, lymphatics, and the genital branch of the genitofemoral nerve.

📘 Q66 (Anatomy) — During a pelvic examination, the cervix is normally found in which orientation relative to the vaginal axis? A) Pointing posteriorly, toward the sacrum B) Pointing anteriorly, toward the pubic symphysis C) Pointing directly inferiorly D) Pointing laterally to the right E) Pointing laterally to the left

Answer: A

The uterus is normally anteverted and anteflexed. The cervix points posteriorly toward the sacrum, while the uterine fundus points anteriorly. This means the external os of the cervix is directed posteriorly, which is why the speculum is angled posteriorly during insertion.

📘 Q67 (Anatomy) — The external iliac artery becomes the femoral artery at which landmark? A) Inguinal ligament B) Midpoint of the inguinal ligament C) Deep inguinal ring D) Superficial inguinal ring E) Lacunar ligament

Answer: A

The external iliac artery passes beneath the inguinal ligament to become the femoral artery. This transition occurs at approximately the midpoint of the inguinal ligament (midway between the anterior superior iliac spine and the pubic symphysis), which is also where the femoral pulse is palpated.

📘 Q68 (Anatomy) — The rectus abdominis muscle is innervated by which nerves? A) Subcostal nerve (T12) and iliohypogastric nerve B) Lower intercostal nerves (T7–T11) C) Ilioinguinal nerve D) Genitofemoral nerve E) Lumbar plexus branches

Answer: B

The rectus abdominis muscle is innervated segmentally by the anterior rami of the lower thoracic nerves (T7–T11) and the subcostal nerve (T12). These nerves enter the rectus sheath laterally and supply the muscle from its posterior aspect.

📘 Q69 (Anatomy) — Which of the following statements regarding the female urethra is correct? A) It is approximately 8–10 cm long B) It runs entirely within the deep perineal pouch C) It is lined by stratified squamous non-keratinized epithelium throughout D) It is approximately 3–4 cm long and lined by transitional epithelium proximally and stratified squamous epithelium distally E) It has an internal sphincter of skeletal muscle

Answer: D

The female urethra is short (3–4 cm). It is lined by transitional epithelium near the bladder (proximal) and stratified squamous non-keratinized epithelium distally. The internal urethral sphincter is smooth muscle (involuntary), while the external urethral sphincter is skeletal (voluntary).

📘 Q70 (Anatomy) — The lymphatic drainage of the upper vagina is primarily to which nodes? A) Superficial inguinal nodes B) Internal iliac and obturator nodes C) Para-aortic nodes D) External iliac nodes E) Sacral nodes

Answer: B

The upper vagina (upper two-thirds) drains primarily to the internal iliac (hypogastric) and obturator lymph nodes, similar to the cervix. The lower vagina (lower one-third) drains to the superficial inguinal nodes, like the vulva. This dual drainage pattern is important in staging vaginal cancer.

📘 Q71 (Anatomy) — The piriformis muscle exits the pelvis through the: A) Obturator foramen B) Greater sciatic foramen C) Lesser sciatic foramen D) Sacral canal E) Obturator canal

Answer: B

The piriformis muscle originates from the anterior surface of the sacrum and exits the pelvis through the greater sciatic foramen to insert on the greater trochanter of the femur. It is a key landmark in the gluteal region, and structures passing above or below it are described as suprapiriform or infrapiriform.

📘 Q72 (Anatomy) — The mesonephric (Wolffian) duct remnants in females are found in which location? A) In the broad ligament — epoophoron and paroophoron B) In the ovary C) In the cervix D) In the vaginal wall E) In the round ligament

Answer: A

In females, the mesonephric ducts largely degenerate. Their remnants persist as the epoophoron and paroophoron, which are small vestigial structures in the broad ligament near the ovary and uterine tube. Gartner's duct cysts are remnants of the mesonephric duct in the lateral vaginal wall.

📘 Q73 (Anatomy) — Which of the following muscles is the primary compressor of the urethra in females? A) Levator ani B) Bulbospongiosus C) External urethral sphincter (sphincter urethrae) D) Deep transverse perineal muscle E) Ischiocavernosus

Answer: C

The external urethral sphincter (sphincter urethrae) is a striated voluntary muscle in the deep perineal pouch that encircles the urethra and provides active compression to maintain urinary continence. The levator ani provides additional support. The bulbospongiosus constricts the vaginal orifice.

📘 Q74 (Anatomy) — The sacrotuberous ligament, together with the sacrospinous ligament, converts which notch into a foramen? A) Obturator notch B) Sciatic notches C) Sacral hiatus D) Suprapiriform notch E) Infrapiriform notch

Answer: B

The sacrotuberous and sacrospinous ligaments convert the greater and lesser sciatic notches of the ilium into the greater and lesser sciatic foramina, respectively. The sacrotuberous ligament runs from the sacrum to the ischial tuberosity, and the sacrospinous ligament from the sacrum to the ischial spine.

📘 Q75 (Anatomy) — The innervation of the clitoris is primarily from: A) Anterior labial branch of ilioinguinal nerve B) Dorsal nerve of the clitoris (branch of pudendal nerve) C) Genital branch of genitofemoral nerve D) Perineal branch of posterior femoral cutaneous nerve E) Obturator nerve

Answer: B

The dorsal nerve of the clitoris is the terminal branch of the pudendal nerve and provides the primary sensory innervation to the clitoris. It runs along the inferior pubic ramus, pierces the perineal membrane, and courses along the dorsum of the clitoral body.

📘 Q76 (Anatomy) — The triangular space between the clitoris and the vaginal orifice containing the urethral meatus is called the: A) Vestibule B) Fourchette C) Fossa navicularis D) Introitus E) Vestibular bulb

Answer: A

The vestibule of the vagina is the almond-shaped space bounded by the labia minora laterally. It contains the urethral meatus anteriorly and the vaginal orifice posteriorly, along with the openings of Bartholin and Skene's glands. The clitoris lies anterior to the vestibule.

📘 Q77 (Anatomy) — The lactiferous sinuses of the breast are located: A) In the subcutaneous tissue, deep to the areola B) In the retromammary space C) In the axillary tail D) Deep within the breast parenchyma E) In the pectoral fascia

Answer: A

The lactiferous sinuses are dilated portions of the lactiferous ducts located just deep to the areola. They serve as milk reservoirs during lactation. Each of the 15–20 lobes of the breast drains via a lactiferous duct that dilates into a sinus before opening at the nipple.

📘 Q78 (Anatomy) — Which of the following fascial layers forms the roof of the urogenital triangle? A) Perineal membrane (inferior fascia of the urogenital diaphragm) B) Superior fascia of the urogenital diaphragm C) Colle's fascia (Colles' fascia) D) Scarpa's fascia E) Clavipectoral fascia

Answer: B

The urogenital diaphragm (deep perineal pouch) has two fascial layers: the superior fascia (roof) and the perineal membrane or inferior fascia (floor). The space between them is the deep perineal pouch. Colles' fascia is the membranous layer of the superficial perineal fascia.

📘 Q79 (Anatomy) — The artery that is most at risk during a Burch colposuspension or retropubic sling procedure is: A) Obturator artery B) Inferior epigastric artery C) Internal pudendal artery D) Uterine artery E) Ovarian artery

Answer: B

The inferior epigastric artery runs along the posterior surface of the rectus abdominis and is at risk during retropubic procedures (e.g., Burch colposuspension, TVT). The external iliac vessels are also at risk when placing sutures into Cooper's ligament. The obturator neurovascular bundle can be injured during pelvic lymphadenectomy.

📘 Q80 (Anatomy) — The layer of the abdominal wall that is continuous with the external spermatic fascia is: A) External oblique aponeurosis B) Internal oblique fascia C) Transversalis fascia D) Scarpa's fascia E) Camper's fascia

Answer: A

During the descent of the testis, layers of the anterior abdominal wall contribute to the coverings of the spermatic cord. The external spermatic fascia is derived from the external oblique aponeurosis. The cremasteric fascia comes from the internal oblique, and the internal spermatic fascia from the transversalis fascia.

📘 Q81 (Anatomy) — The nerve that is most commonly damaged during a McRoberts maneuver for shoulder dystocia is: A) Obturator nerve B) Femoral nerve C) Sciatic nerve D) Lateral femoral cutaneous nerve E) Pudendal nerve

Answer: B

The femoral nerve (L2–L4) is the most commonly injured nerve during the McRoberts maneuver (extreme hyperflexion and abduction of the maternal thighs). The nerve is compressed behind the inguinal ligament. This typically results in transient weakness of hip flexion and knee extension.

📘 Q82 (Anatomy) — The normal capacity of the adult female urinary bladder is approximately: A) 100–150 mL B) 200–250 mL C) 400–600 mL D) 750–900 mL E) 1000–1200 mL

Answer: C

The normal adult female bladder capacity is approximately 400–600 mL, with the first sensation of filling occurring at around 150–200 mL and a moderate desire to void at 250–400 mL. During pregnancy, bladder capacity is reduced due to compression by the gravid uterus.

📘 Q83 (Anatomy) — The lymphatic drainage of the endometrium is primarily to which nodal group? A) Para-aortic nodes B) Internal iliac nodes C) External iliac nodes D) Superficial inguinal nodes E) Obturator nodes

Answer: B

The endometrium (along with the uterine body) drains primarily to the internal iliac (hypogastric) lymph nodes. Some drainage from the fundus also goes to the para-aortic nodes along the ovarian vessels. The cervix drains to obturator and internal iliac nodes.

📘 Q84 (Anatomy) — Which of the following structures passes through the deep inguinal ring in a female? A) Round ligament of the uterus B) Ovarian ligament C) Uterine tube D) Broad ligament E) Suspensory ligament of the ovary

Answer: A

The deep inguinal ring transmits the round ligament of the uterus in females (and the spermatic cord in males). The round ligament passes through both deep and superficial inguinal rings to reach the labium majus. The ovarian and suspensory ligaments do not enter the inguinal canal.

📘 Q85 (Anatomy) — The sagittal sutures of the fetal skull meet the coronal sutures at the: A) Bregma (anterior fontanelle) B) Lambda (posterior fontanelle) C) Pterion D) Asterion E) Vertex

Answer: A

The bregma is the point where the sagittal suture meets the coronal sutures. It is the location of the anterior (frontal) fontanelle, which is diamond-shaped and typically closes around 18–24 months of age. The lambda is where the sagittal meets the lambdoid sutures (posterior fontanelle).

📘 Q86 (Anatomy) — The ureter in its pelvic course is closely related to all of the following EXCEPT: A) Uterine artery B) Vaginal fornix C) Broad ligament D) Rectum E) Ovary

Answer: E

The pelvic ureter runs close to the uterine artery (passing under it), the lateral vaginal fornix (approximately 1.5 cm lateral), the broad ligament (running in extraperitoneal tissue beneath it), and the lateral aspect of the rectum. It is not directly adjacent to the ovary, which is more superior and lateral.

📘 Q87 (Anatomy) — The axillary tail of Spence extends from the upper outer quadrant of the breast toward which region? A) Clavicle B) Axilla C) Sternum D) Midline E) Costal margin

Answer: B

The axillary tail of Spence (or tail of Spence) is an extension of breast tissue from the upper outer quadrant that passes through the axillary fascia (foramen of Langer) into the axilla. It is clinically important because it can be mistaken for axillary lymphadenopathy and can be involved in breast cancer.

📘 Q88 (Anatomy) — The modified radical mastectomy preserving the pectoralis major muscle removes which muscle(s)? A) Pectoralis major and minor B) Pectoralis minor only C) Neither pectoralis major nor minor D) Pectoralis major only E) Serratus anterior

Answer: B

In a modified radical mastectomy (Patey procedure), the pectoralis major muscle is preserved and the pectoralis minor is removed to provide access to the axillary lymph nodes. The classic radical mastectomy (Halsted) removes both pectoralis muscles. Simple mastectomy removes breast tissue only.

📘 Q89 (Anatomy) — The normal neonatal cervix-to-uterine corpus ratio is approximately: A) 1:1 B) 1:2 C) 2:1 D) 1:3 E) 3:1

Answer: C

In the neonate, the cervix is approximately twice the length of the uterine corpus (2:1 ratio). This reverses during childhood, and by puberty, the corpus is approximately twice the length of the cervix (2:1 ratio), which persists through reproductive years. After menopause, the ratio returns toward 1:1.

📘 Q90 (Anatomy) — Which of the following structures is located in the superficial inguinal ring in females? A) Ilioinguinal nerve B) Genitofemoral nerve C) Obturator nerve D) Femoral nerve E) Lateral femoral cutaneous nerve

Answer: A

The ilioinguinal nerve (L1) passes through the superficial inguinal ring in both males and females. In females, it supplies the skin of the mons pubis and the anterior part of the labium majus. In males, it supplies the root of the penis and scrotum.

📘 Q91 (Anatomy) — The joint between the sacrum and the coccyx is classified as: A) Synovial joint B) Symphysis (secondary cartilaginous joint) C) Fibrous joint D) Synostosis E) Gomphosis

Answer: B

The sacrococcygeal joint is a symphysis (secondary cartilaginous joint/amphiarthrosis), connected by a fibrocartilaginous disc and ligaments. It allows limited movement, which increases during pregnancy under hormonal influence. This mobility may contribute to coccydynia and is important for the passage of the fetal head during delivery.

📘 Q92 (Anatomy) — The artery of the round ligament of the uterus is a branch of: A) Uterine artery B) Ovarian artery C) Inferior epigastric artery D) Internal pudendal artery E) External iliac artery

Answer: C

The round ligament of the uterus receives its blood supply from the artery of the round ligament (Sampson's artery), which is a branch of the inferior epigastric artery (a branch of the external iliac artery). This vessel runs within the round ligament and anastomoses with the ovarian and uterine arteries.

📘 Q93 (Anatomy) — The pelvic splanchnic nerves contain which type of nerve fibers? A) Sympathetic preganglionic B) Sympathetic postganglionic C) Parasympathetic preganglionic D) Parasympathetic postganglionic E) Somatic motor

Answer: C

The pelvic splanchnic nerves (nervi erigentes) arise from the anterior rami of S2–S4 and carry parasympathetic preganglionic fibers to the pelvic ganglia (inferior hypogastric plexus). They are responsible for penile/clitoral erection, bladder emptying, and rectal evacuation. Sympathetic fibers reach the pelvis via the hypogastric nerves.

📘 Q94 (Anatomy) — The number of lobes in the adult female breast is typically: A) 5–10 B) 15–20 C) 25–30 D) 35–40 E) 1–4

Answer: B

The adult female breast typically contains 15–20 lobes, each consisting of multiple lobules and drained by a single lactiferous duct. Each lactiferous duct dilates into a lactiferous sinus before opening onto the nipple. The lobes are separated by fibrous septa (Cooper's ligaments).

📘 Q95 (Anatomy) — The inferior hypogastric (pelvic) plexus lies in close proximity to which structure? A) Obturator internus muscle B) Rectal ampulla and lateral vaginal fornices C) Piriformis muscle D) Uterine fundus E) Round ligament

Answer: B

The inferior hypogastric plexus (pelvic plexus) is located on each side of the pelvis adjacent to the rectal ampulla, the lateral vaginal fornices, and the base of the bladder. It contains both sympathetic and parasympathetic fibers and gives rise to innervation of the pelvic viscera. It is at risk during radical hysterectomy, potentially causing bladder dysfunction.

📘 Q96 (Anatomy) — The Hesselbach triangle (inguinal triangle) boundaries include: A) Inguinal ligament, rectus abdominis, and inferior epigastric vessels B) Inguinal ligament, superior epigastric vessels, and iliac crest C) Inguinal ligament, rectus abdominis, and superior epigastric vessels D) Inguinal ligament, external oblique aponeurosis, and iliac crest E) Lacunar ligament, rectus abdominis, and inferior epigastric vessels

Answer: A

Hesselbach's triangle is bounded laterally by the inferior epigastric vessels, medially by the lateral border of the rectus abdominis, and inferiorly by the inguinal ligament. Direct inguinal hernias protrude through this triangle, medial to the inferior epigastric vessels, while indirect hernias emerge lateral to them.

📘 Q97 (Anatomy) — The arterial anastomosis at the angle of the uterus between the uterine and ovarian arteries is important for: A) Ensuring adequate blood supply to the ovary B) Providing collateral circulation if one vessel is ligated C) Supplying the cervical branch D) Maintaining the vaginal blood supply E) Providing the blood supply to the fallopian tubes only

Answer: B

The anastomosis between the ascending branch of the uterine artery and the ovarian artery at the cornual region of the uterus provides important collateral circulation. This means that if the uterine artery is ligated (during myomectomy or postpartum hemorrhage), the uterus can still receive blood supply from the ovarian artery, helping preserve fertility.

📘 Q98 (Anatomy) — The nerve supply to the female breast is primarily from which intercostal nerves? A) T1–T4 B) T2–T6 C) T4–T7 D) T5–T8 E) T7–T10

Answer: B

The female breast receives sensory innervation primarily from the anterior and lateral cutaneous branches of the second through sixth intercostal nerves (T2–T6). The T4 intercostal nerve supplies the areolar region. The supraclavicular nerves (from the cervical plexus, C3–C4) supply the superior aspect of the breast.

📘 Q99 (Anatomy) — The fossa navicularis is a feature of which structure? A) Vagina B) Vestibule of the vagina before the hymen C) Bladder D) Urethra E) Rectum

Answer: B

The fossa navicularis is the boat-shaped depression in the vestibule between the hymen and the posterior fourchette (frenulum of the labia minora). It is more prominent in virginal females and becomes less distinct after childbirth. The term is sometimes also used for the Navicular fossa of the male urethra.

📘 Q100 (Anatomy) — Which of the following correctly describes the course of the pelvic ureter? A) It crosses the pelvic brim at the bifurcation of the common iliac artery, runs lateral to the ovary, passes under the uterine artery, and enters the bladder B) It crosses the pelvic brim medial to the ovarian vessels, runs anterior to the cervix, and enters the bladder C) It runs between the layers of the broad ligament throughout its course D) It passes through the inguinal canal before entering the bladder E) It runs posterior to the rectum before entering the bladder

Answer: A

The pelvic ureter crosses the pelvic brim near the bifurcation of the common iliac artery, runs laterally to the ovary in the ovarian fossa, passes approximately 2 cm lateral to the supravaginal cervix beneath the uterine artery ("water under the bridge"), and then courses anteromedially to enter the posterolateral bladder wall.

← Previous

Mock Exam 07

Mock Exam 09