pelvis muscle chart

Question 1

obturator internus and piriformis m distal attachment?

Answer 1

greater trochanter

Question 2

obturator internus m proximal attachment?

Answer 2

obturator membrane

Question 3

piriformis muscle proximal attachment?

Answer 3

S2-S4 vertebra; sacrotuberous ligament

Question 4

obturator internus and piriformis m action?

Answer 4

hip ER

Question 5

innervation obturator internus m?

Answer 5

nerve to obturator internus L5-S2

Question 6

puborectalis m proximal attachment?

Answer 6

pubis

Question 7

innervation piriformis m?

Answer 7

nerve to piriformis S1-S2

Question 8

puborectalis m distal attachment?

Answer 8

pubis as it loops around anal rectal junction

Question 9

pubococcygeus mm proximal attachment?

Answer 9

body of pubis and anterior tendinous arch

Question 10

pubococcygeus mm distal attachment?

Answer 10

coccyx and anococcygeal ligament

Question 11

action of puborectalis?

Answer 11

aids in defecation

Question 12

action pubococcygeus m?

Answer 12

tonic contraction; relax to release pressure on external anal sphincter

Question 13

iliococcygeous mm proximal attachment?

Answer 13

posterior arcus teninous and ischial spine

Question 14

iliococcygeous mm distal attachment?

Answer 14

coccyx and anococcygeal ligament

Question 15

action iliococcygeous mm

Answer 15

elevate pelvic floor; support pelvic viscera

Question 16

ischiococcygeus proximal attachment?

Answer 16

ischial spine

Question 17

ischiococcygeus distal attachment?

Answer 17

inferior sacrum and coccyx

Question 18

action ischial coccygeus mm?

Answer 18

supports and elevated pelvic floor; supports (flexes) coccyx

Question 19

where does the obturator internus tendon exit the pelvis?

Answer 19

lesser sciatic foramen

Question 20

where does the piriformis muscle exit the pelvis?

Answer 20

greater sciatic foramen