muscles of the pelvic walls and floor

Question 0

levator ani insertion

Answer 0

perineal body
coccyx
anococygeal lig
walls of prostate or vagina
rectum
anal canal

Question 1

levator ani origin

Answer 1

body of pubis
tendinous arch of levator ani
ishial spine

Question 2

levator ani innervation

Answer 2

nerve to levator ani (branches of S4) inferior anal nerve and coccygeal plexus

Question 3

action of the levator ani

Answer 3

support th epelvic viscera

resists increases in intra-abdominal pressure

Question 4

coccygeus origin

Answer 4

ischial spine

Question 5

coccygeus insertion

Answer 5

inferior end of sacrum and coccyx

Question 6

innervation of coccygeus

Answer 6

branches of S4-S5 nerves

Question 7

obtrurator origin

Answer 7

pelvic surface of ilium and ischium

obtrurator membrane

Question 8

obtrurator and piriformis insertion

Answer 8

greater trochanter of femur

Question 9

innervation of obtrurator

Answer 9

nerve to obtrurator internus (L5, S1, S2)

Question 10

action of obtrurator

Answer 10

laterally rotates hip joint

assists in holding head of femur in acetabulum

Question 11

pirirformis origin

Answer 11

pelvic surface of 2nd-4th sacral segments

superior margin of greater sciatic notch and sacrotuberous ligament

Question 12

Piriformis innervation

Answer 12

anterior rami of S1-S2

Question 13

action of piriformis

Answer 13

laterally rotates hip joint
abducts hip joint
assists in holding head of femur in acetabulum