Pelvic Walls

Question 1

What are the walls of the pelvis?

Answer 1

• two lateral walls
• posterior wall
• floor

Question 2

What is the bony framework of the lateral walls of the pelvis?

Answer 2

the portion of the hip bone which lies below the pelvic brim

Question 3

What is the lateral wall covered by?

Answer 3

• obturator internus muscle

- obturator fascia

Question 4

What is the bony framework of the posterior wall of the pelvis?

Answer 4

the sacrum and coccyx

Question 5

What is the direction of the posterior wall?

Answer 5

concave anteriorly

Question 6

What covers the lateral portion of the posterior wall?

Answer 6

• piriformis muscle

- coccygeus (ischiococcygeus) muscle

Question 7

What is the floor of the pelvis composed of?

Answer 7

structures which give support to abdominal and pelvic viscera

Question 8

What structures are included in the floor of the pelvis?

Answer 8

• peritoneum (above)

- pelvic diaphragm (below)

Question 9

What is the pouch formed by the peritoneum in the male?

Answer 9

Rectovesical pouch

• between the rectum and bladder
• it is the lowest point in the peritoneum of the male
• ascites and blood accumulate here

Question 10

What are the pouches formed by the peritoneum in the female?

Answer 10

1. Rectouterine pouch
   - between the rectum and uterus
   - it is the lowest point in the peritoneum of the female
   - blood and ascites accumulate here
   - abdominal ectopic pregnancies occur here
2. Vesicouterine pouch
   - between the bladder and uterus
   - of lesser significance