Muscles of pelvic walls and floor

Question 0

Levator ani Distal attachment

Answer 0

Perineal body, coccyx, anococcygealligament, walls of prostate or vagina, rectum, anal canal

Question 1

Levator ani proximal attachment

Answer 1

Body of pubis, tendinous arch of levator ani, ischial spine

Question 2

Levator ani innervation

Answer 2

Nerve to levator ani (branches of S4), inferior anal (rectal) nerve, coccygeal plexus

Question 3

Levator ani action

Answer 3

Helps support pelvic viscera; resists increases in intrabdominal pressure

Question 4

Coccygeus Proximal attachment

Answer 4

Ischial spine

Question 5

Coccygeus distal attachment

Answer 5

Inferior end of sacrum and coccyx

Question 6

Coccygeus innervation

Answer 6

Branches of S4 and S5 nerves

Question 7

Coccygeus action

Answer 7

Forms small part of pelvic diaphragm that supports pelvic viscera; flexes coccyx

Question 8

Obturator internus proximal attachment

Answer 8

Pelvic surface of ilium and ischium; obturator membrane

Question 9

Obturator internus distal attachment

Answer 9

Greater trochanter of femur

Question 10

Obturator internus innervation

Answer 10

Nerve to obturator internus L5, S1, S2

Question 11

Obturator internus action

Answer 11

Laterally rotates hip joint; assists in holding head of femur in acetabulum

Question 12

Piriformis Proximal attachment

Answer 12

Pelvic surface of 2nd-4th sacral segments; superior margin of greater sciatic notch and sacrotuberous ligament

Question 13

Piriformis distal attachment

Answer 13

Greater trochanter of femur

Question 14

Piriformis Innervation

Answer 14

Anterior rami of S1 and S2

Question 15

Piriformis action

Answer 15

Laterally rotates hip joint; abducts hip joint; assists in holding head of femur in acetabulum

Question 16

what muscles make up the Pelvic Diaphragm?

Answer 16

Levator ani and Coccygeus

Question 17

What is the Tendinous arch?

Answer 17

Thickening in the obturator fascia