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Jonathan's Reproduction > Wall and Floor of Pelvis > Flashcards

Flashcards in Wall and Floor of Pelvis Deck (20)
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1

T/F Obturator membrane completely closes the obturator foramen

False, it leaves out the obturator canal for the obturator nerve

2

Which three muscles are found on the internal wall of the pevlis?

obturator internus
piriformis
levator ani

3

What is the origin of obturator internus?

internal surface of the obturator membrane as well as the adjacent margins

4

How does obturator internus exit the pelvis?

through the lesser sciatic foramen, collecting the gemelli along the way

5

What is the insertion of obturator internus?

greater trochanter

6

What is the origin of piriformis?

the middle three pieces of the sacrum and adjacent part of the lateral mass

7

How does piriformis exit the pelvis?

greater sciatic foramen

8

What are the three parts of pelvic floor?

pubococcygeus
iliococcygeus
ischiococcygeus

9

What are the sub-components of pubococcygeus?

pubo-vaginalis or puboprostaticus

puborectalis as the posterior sling

10

T/F iliococcygeus overlaps the pubococcygeus

False, it underlaps it

11

What is the course of ischiococcygeus?

from the ischial spine to the coccyx, on the internal surface of ischiococcygeous ligament

12

What is the origin of levator ani?

from internal aspect of the pubic bone along the side wall of the pelvis, half way along the obturator internus, ending at ischial spine

13

Can we see the origin of levator ani?

yes, the border is thickened. We can see the delineating line on obturator internus

14

The insertion of levator ani is via a central raphe. What's the course of this raphe?

tip of coccyx to the anal junction, hence called the anal-coccygeal raphe

15

T/F Loose fascia surrounds the structures that are mobile

True, like the bladder, vagina, pelvic floor

16

Which structures in the pelvis have dense fascia around them

piriformis, obturator internus, prostate

17

In relation to endopelvic fascia, why does pelvic sepsis spread so quickly?

Endopelvic fascia fills the space of the pelvis, so infection tends to follow the tissue and spread rapidly

18

What are the layers of the pelvis from outside to inside?

bones and joints, to muscles, to sacral plexus, to fascia, to vessels, then to viscera

19

Which division of internal iliac supplies the pelvic viscera?

the anterior division

20

How high can the bladder reach in the abdominal cavity?

when filled, it can be as high as the umbilicus