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Gross II Final > Pelvic Walls > Flashcards

Flashcards in Pelvic Walls Deck (44)
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1

What are the subdivisions of the pelvis?

Two lateral walls, a posterior wall, and a floor

2

The bony framework of the lateral wall is what part of the hip bone?

That which lies below the pelvic brim

3

What two things primarily cover the lateral wall of the pelvis?

Obturator internus muscle and obturator fascia

4

What makes up the bony framework of the posterior wall of the pelvis?

Sacrum and coccyx

5

Is the posterior wall convex or concave anteriorly?

Concave

6

What covers the lateral portion of the posterior wall of the pelvis?

Piriformis muscle and coccygeus (ischiococcygeus) muscle

7

Why is the floor of the pelvis more important among humans than other mammals?

Because we walk upright

8

What two things make up the pelvic floor?

Peritoneum (above) and pelvic diaphragm (below)

9

What is the space located between the rectum and bladder called?

Rectovesical pouch

10

What is the lowest point in the peritoneum of the male?

Rectovesical pouch

11

What is the space located between the rectum and uterus?

Rectouterine pouch

12

What is the space located between the bladder and uterus?

Vesicouterine pouch

13

What is a less common but possible site for ectopic pregnancy of the pelvic wall area?

Rectouterine pouch

14

Ascites and blood can pool in which downward reflections of the peritoneum?

Rectovesical or rectouterine pouch

15

What is the major support structure for pelvic viscera?

Pelvic diaphragm

16

The pelvic diaphragm consists of which muscles?

Coccygeus (ischiogoccygeus) and levator ani muscles

17

What is the major constituent of the pelvic diaphragm?

Levator ani muscle

18

What is the opening of the pelvic diaphragm that transmits the urethra in males and both the urethra and vagina in females?

Urogenital hiatus

19

What is the opening of the pelvic diaphragm that is found in both sexes?

Anal aperture

20

What is the origin of the coccygeus muscle?

Ischial spine and sacrospinous ligament

21

What is the insertion of the coccygeus muscle?

Coccyx and lower part of sacrum

22

What is the nerve supply of the coccygeus muscle?

Anterior primary rami of 3rd and 4th sacral nerves

23

What is the function of the coccygeus muscle?

Supports pelvic viscera, draws coccyx forward

24

What is the origin of the levator ani muscle?

Body of pubis, tendinous arch, ischial spine

25

What is the insertion of the levator ani muscle?

Coccyx and anococcygeal ligament

26

What is the nerve supply of the levator ani muscle?

Anterior primary rami of 3rd and 4th sacral nerves, perineal branch of pudendal nerve

27

What is the function of the levator ani muscle?

As a whole, supports pelvic viscera. Specialized parts of the levator ani perform other functions

28

What is the shape of the levator ani muscle?

Funnel-shaped

29

What are the three parts of the levator ani muscle?

Iliococcygeus, pubococcygeus, and puborectalis

30

What is the most posterior part of levator ani?

Iliococcygeus