Chapter 11 (The Muscular System VI)

Question 1

Muscles of the Pelvic Floor support …

Answer 1

pelvic viscera, resist increased intraabdominal pressure, and provide sphincter function

Question 2

Muscles of the Pelvic Floor (Examples)

Answer 2

Levator Ani

Ischiococcygeus

Question 3

Levator Ani

Answer 3

Pubococcygeus

Iliococcygeus

Question 4

The pelvic diaphragm is formed by

Answer 4

The levator ani, ischiococcygeus, and the fascia

Question 5

The levator ani, ischiococcygeus, and the fascia stretch

Answer 5

From the pubis anteriorly to the coccyx posteriorly, and from one lateral wall of the pelvis to the other

Question 6

The pelvic diaphragm separates

Answer 6

The pelvic cavity above from the perineum below.

Question 7

What is the perineum

Answer 7

A diamond-shaped area inferior to the pelvic diaphragm

Extends from the pubic symphysis anteriorly, to the coccyx posteriorly, and to the ischial tuberosities laterally

Question 8

How are perineal muscles arranged ?

Answer 8

Arranged in two layers:

a) Superficial
b) Deep

Question 9

What’s the function of the deep muscles of the perineum ?

Answer 9

Males: Assist in urination and ejaculation
Females: Assist in urination and compression of the vagina