Pelvis, Perineum and Reproductive Anatomy MCQs

Anatomy · 58 free questions with answers & explanations.

1. The pudendal nerve supplies all perineal structures. Which anatomical canal does it traverse to reach the ischioanal fossa?
2. The urogenital diaphragm (perineal membrane) is pierced by which structure in the male?
3. The pelvic floor (levator ani) has a hiatus called the 'levator hiatus' through which all of the following pass EXCEPT:
4. During a hysterectomy the ureter is most vulnerable to injury at which location?
5. A woman undergoes a difficult forceps delivery. Postpartum she develops stress urinary incontinence and inability to voluntarily interrupt the urinary stream. Injury to which structure is the PRIMARY anatomical basis for her incontinence?
6. During a radical hysterectomy, the ureter is at greatest risk of injury at which specific anatomical point in the pelvis?
7. In a male patient with a bulbar urethral injury from a straddle injury, urine extravasation is confined by Colles' fascia. Into which space does the urine track SUPERIORLY if Colles' fascia is intact?
8. During an abdominoperineal resection, injury to the hypogastric nerve plexus is a recognised complication. Which functional deficits would result from injury to the inferior hypogastric (pelvic) plexus?
9. The pudendal nerve (S2, S3, S4) exits the pelvis through the greater sciatic foramen, winds around the ischial spine, and re-enters through the lesser sciatic foramen to reach Alcock's canal. In which fascial canal does the pudendal nerve travel in the perineum?
10. A woman undergoes uterine artery ligation for postpartum haemorrhage. At what anatomical relationship must the surgeon be careful to avoid the ureter?
11. The round ligament of the uterus traverses the inguinal canal in the female. It is a remnant of which embryological structure?
12. The pudendal nerve (S2, S3, S4) exits the pelvis through the greater sciatic foramen below piriformis, then re-enters through the lesser sciatic foramen. It runs in Alcock's canal (the pudendal canal) on the medial surface of which structure?
13. During childbirth, the perineal body (central tendon of the perineum) is at risk of injury. Which of the following muscles does NOT directly insert into the perineal body?
14. The ureter enters the pelvis by crossing the pelvic brim at the bifurcation of the common iliac artery. In the female pelvis, the ureter passes beneath which structure — the most clinically dangerous cross-point during hysterectomy?
15. The levator ani muscle has three parts. Which part forms a sling around the anorectal junction (anorectal ring) and is the most important component for maintaining faecal continence?
16. During hysterectomy, the ureter is most commonly injured at which specific anatomical point in the female pelvis?
17. Pudendal nerve block is administered at which landmark because the pudendal nerve crosses behind which structure?
18. The deep perineal pouch in the female contains which specific structures relevant to urinary continence?
19. A male patient undergoes anterior resection of rectum. Postoperatively he reports erectile dysfunction and inability to ejaculate. Which nerve plexus was most likely injured?
20. During a difficult forceps delivery, a primigravida sustains perineal trauma and subsequently reports inability to achieve orgasm and loss of sensation in the perineum. Which nerve is most likely injured?
21. The pouch of Douglas (rectouterine pouch) is the most dependent peritoneal recess in the female pelvis in the erect position. Through which route is it most accessible for diagnostic aspiration?
22. A male patient develops retrograde ejaculation after radical prostatectomy. The anatomical basis is disruption of which structure?
23. The round ligament of the uterus follows which embryological structure to reach the labia majora, and through which canal does it pass?
24. During a difficult vaginal delivery, a large episiotomy is made in the right posterolateral direction. Which nerve provides the primary sensory supply to the perineal skin and is blocked by pudendal nerve block to perform this procedure painlessly?
25. A 45-year-old woman undergoing radical hysterectomy develops urinary retention postoperatively. This most likely results from inadvertent injury to which structure?
26. In the male, which structure descends with the testis during fetal development and forms the gubernaculum testis, guiding the testis into the scrotum?
27. A 32-year-old man presents with a perineal abscess just lateral to the anus. Examination shows fluctuance in the ischiorectal fossa. This space communicates with the contralateral side through which potential space?
28. During a difficult forceps delivery, a mother develops inability to abduct her left thigh against resistance, along with sensory loss over the medial thigh. She reports the problem began immediately after delivery. Which nerve is injured and by what mechanism?
29. The pudendal nerve provides somatic innervation to the perineum and is blocked for obstetric analgesia. Through which structure must the needle pass to reach the pudendal nerve at the level of the ischial spine during a transvaginal block?
30. The uterine artery is ligated during hysterectomy. The ureter is immediately at risk because of their anatomical relationship. At what specific point is the ureter closest to the uterine artery?
31. A male patient with a saddle-type perineal injury has priapism and inability to void. Urethral disruption is suspected. The bulbous urethra has ruptured and extravasation of urine occurs. Which fascial layer limits the spread of extravasating urine to the scrotum, perineum, and lower anterior abdominal wall?
32. During a difficult forceps delivery, the pudendal nerve can be stretched. The pudendal nerve (S2, S3, S4) exits the greater sciatic foramen, hooks around the ischial spine/sacrospinous ligament, and re-enters via the lesser sciatic foramen into the pudendal canal (Alcock's canal). Which structure forms the medial wall of the pudendal canal?
33. A female patient has injury to the obturator nerve (L2-L4) following obturator hernia repair. Which specific motor deficit would be MOST prominent?
34. In the male perineum, rupture of the bulbar urethra (from a straddle injury) causes extravasation of urine. Urine collects in the superficial perineal pouch and tracks into which anatomical spaces?
35. During a radical hysterectomy (Wertheim's operation), the ureter is at risk of injury at several points. The most common site of inadvertent ureteral ligation is at which location?
36. The pudendal nerve block is performed by injecting local anesthetic at the ischial spine. The pudendal nerve re-enters the perineum via which canal, and what compartment does it first enter?
37. In a male patient undergoing abdominoperineal resection (APR) for low rectal carcinoma, the autonomic nerve most responsible for erectile function that is at risk of injury is:
38. The ureter crosses the pelvic brim at which anatomical landmark and is then at highest risk of surgical injury at which point in the female pelvis?
39. The pudendal nerve block is performed by identifying the ischial spine transvaginally or via the perineum. The pudendal nerve enters the perineum via which foramen after passing through the lesser sciatic foramen?
40. During a difficult forceps delivery, which nerve is most vulnerable to compression against the lateral wall of the pelvis at the level of the ischial spine?
41. The fascial floor of the deep perineal pouch (the perineal membrane) is pierced by the deep dorsal vein of the penis/clitoris, which drains into the:
42. In the female, the ureter is at risk of injury during hysterectomy at a point where it passes close to the lateral fornix of the vagina. At this point the ureter lies medial to the:
43. The pudendal nerve (S2, S3, S4) exits the pelvis through which foramen, winds around which structure, and re-enters the perineum through which canal?
44. In the female pelvis, the ureter is crossed superiorly by the uterine artery at what level, and what is the clinical significance?
45. The pudendal nerve leaves the pelvis through the greater sciatic foramen and re-enters via the lesser sciatic foramen to run in Alcock's canal. The pudendal nerve block for perineal analgesia is best performed at which landmark?
46. The ureter passes beneath which ligament in the female pelvis, creating the risk of ureteric ligation during hysterectomy?
47. A woman undergoes a vaginal hysterectomy for uterovaginal prolapse. During ligation of the uterine artery near the lateral fornix of the vagina, the ureter is at risk because of its proximity. What is the precise anatomical relationship?
48. The perineal body (central tendon of the perineum) is the fibromuscular node at the centre of the perineum between the anal and urogenital triangles. Which muscles do NOT insert into the perineal body?
49. During a pudendal nerve block performed for perineal analgesia in labor, the needle is directed toward which bony landmark using the transvaginal approach?
50. In female pelvic anatomy, the ureter passes beneath the uterine artery (water under the bridge) as it courses to the bladder. At what specific anatomical point is the ureter most at risk during hysterectomy?
51. The pudendal nerve provides the major somatic innervation of the perineum. Through which opening does it enter and exit the lesser sciatic foramen, and which ligament does it hook around?
52. During hysterectomy, the ureter is at greatest risk of injury at which specific anatomical location in the broad ligament?
53. The pudendal nerve (S2, S3, S4) provides the predominant sensory and motor innervation to the perineum. Which canal does it traverse to reach the perineum?
54. During a hysterectomy, the ureter is most at risk of injury at which specific anatomical location?
55. The sphincter urethrae (external urethral sphincter) is a voluntary muscle. In males, which nerve provides its motor innervation?
56. Lymphatic drainage of the testis differs from that of the scrotum. Testicular lymphatics drain to which node group, reflecting its embryological origin?
57. The perineal body (central tendon of the perineum) is a fibromuscular node at the center of the perineum. Which of the following muscles does NOT attach to the perineal body?
58. The pudendal nerve (S2–S4) provides sensory and motor innervation to the perineum. It leaves the pelvis and re-enters via which route?