Question 1

Which of the following bones is NOT considered part of the posterior abdominal wall?

Accepted Answer

Femur

Question 2

A patient presents with difficulty in lateral flexion of the trunk and pain along the lateral abdominal wall. Which muscle is most likely affected?

Accepted Answer

Quadratus lumborum

Question 3

Which nerve innervates the diaphragm and what is its spinal root origin?

Accepted Answer

Phrenic nerve, C3-C5

Question 4

The pelvic inlet is defined by which of the following anatomical landmarks?

Accepted Answer

Pectineal line, sacral promontory, and pubic symphysis

Question 5

Which of the following statements best describes the function of the bony pelvis?

Accepted Answer

It transmits the weight of the upper body to the lower limbs and protects pelvic organs.

Question 6

A 30-year-old woman is in labor. Which pelvic structure must the fetus pass through last before exiting the body?

Accepted Answer

Pelvic outlet

Question 7

Which of the following is a major anatomical difference between the male and female pelvis?

Accepted Answer

The female pelvis has a larger pelvic inlet and outlet.

Question 8

Which joint in the pelvis is classified as a cartilaginous joint and is important for weight transmission?

Accepted Answer

Pubic symphysis

Question 9

A patient has a herniation passing through the obturator foramen. Which structure is most at risk of being compressed?

Accepted Answer

Obturator nerve

Question 10

Which artery is the primary blood supply to the perineum?

Accepted Answer

Internal pudendal artery

Question 11

A patient is unable to laterally rotate their hip. Which muscle, passing through the greater sciatic foramen, is most likely affected?

Accepted Answer

Piriformis

Question 12

Which of the following best describes the boundaries of the perineum?

Accepted Answer

Between the pubic symphysis, coccyx, and ischial tuberosities

Question 13

Which nerve is responsible for the innervation of the levator ani muscle?

Accepted Answer

Pudendal nerve

Question 14

A patient with a pelvic fracture is found to have impaired adduction of the thigh. Which nerve is most likely injured?

Accepted Answer

Obturator nerve

Question 15

Which ligament converts the greater sciatic notch into the greater sciatic foramen?

Accepted Answer

Sacrospinous ligament

Question 16

During defecation, which muscle must relax to allow passage of feces through the anal canal?

Accepted Answer

Puborectalis

Question 17

Which of the following arteries is a branch of the posterior trunk of the internal iliac artery?

Accepted Answer

Superior gluteal artery

Question 18

A patient presents with loss of sensation in the perineal region and inability to control the external anal sphincter. Which nerve is most likely damaged?

Accepted Answer

Pudendal nerve

Question 19

Which of the following best describes the functional classification of the sacroiliac joint?

Accepted Answer

Diarthrosis

Question 20

A hernia passing under the inguinal ligament is most likely to compress which structure?

Accepted Answer

Femoral artery

Anatomy of the Pelvis, Posterior Abdominal Wall, and Perineum

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