Pelvic Floor Flashcards Preview

620: Clinical Human Anatomy > Pelvic Floor > Flashcards

Flashcards in Pelvic Floor Deck (10)
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1
Q

The pelvic floor is bounded anteriorly by the _____, posteriorly by the _____, and laterally by the ____.

A

genitals
anus
thighs

2
Q

All muscles of the perineum are innervated by what nerve?

A

pudnedal nerve

3
Q

What are the 4 muscles of the pelvic floor?

A
  • Levator ani
  • Coccygeus
  • External urethral sphincter
  • External anal sphincter
4
Q

2 Parts of the Levator Ani

A

Pubococcygeus

Iliococcygeus

5
Q

Where is the levator ani located?

A

it is a broad flat muscle that surrounds the anus

6
Q

What is the function of the levator ani?

A

to elevate the perineum and constrict the anus to hold in fecal matter

7
Q

Where does the coccygeus muscle originate and insert?

A

Originates on the ischial spine and inserts onto the inferior ends of the sacrum and coccyx

8
Q

What is the function of the coccygeus muscle?

A

to constrict the anus and hold fecal matter in the rectum

9
Q

Where does the iliococcygeus originate and insert?

A

arises from the inner side of the ischium and the posterior part of arch of the obturator and inserts onto the coccyx

10
Q

Where does the pubococcygeus originate and insert?

A

it is the hammock-like muscle that stretches from the pubic bone to the coccyx