Pelvic wall and floor

Question 1

What converts the greater sciatic notch into a foramen

Answer 1

the sacrospinous/sacrotuberous ligament

Question 2

What closes the obtrator foramen

Answer 2

a membrane that is the origin of the obtrator internus and exernus

Question 3

Function and innervation of iliacus

Answer 3

Hip flexion, femoral nerve L2-4

Question 4

Psoas function and innervation

Answer 4

Hip flexion, bend trunk laterally, raise trunk from laying.
Lumbar plexus L2-L4

Question 5

Function of obturator externus

Answer 5

lateral rotation and adduction of hip joint
inn: Obturator n

Question 6

Obturator internus function and innervation

Answer 6

Lateral rotation of the hip, sacral plexus

Question 7

What are the muscles that make up the pelvic diaphragm

Answer 7

Levator ani, coccygeus

Question 8

Function and innervation of coccygeus

Answer 8

Support pelvic viscera, flexion of coccyx
sacral plexus S4-S5

Question 9

What are the levator ani and coccygeus part of

Answer 9

The pelvic diaphragm

Question 10

Contrast the levator prostate with the pubovaginalis

Answer 10

Levator prostatae- in males, medial fibres pass around prostate and insert into perineal body
Pubovaginalis- medial fibres pass around vagina and insert into perineal body
Both sexes- have puborectalis

Question 11

What innervates the levator ani

Answer 11

S2-S4

Question 12

Where does the rectum become the anal canal

Answer 12

when the rectum pierces the pelvic floor

Question 13

What type of muscle is the external anal sphincter

Answer 13

Skeletal muscle- innervated by pudendal nerve (S2-S4).

Question 14

Boundaries of the urogenital triangle

Answer 14

Anterior: Inferior margin of the pubic symphysis
Posterior: line between ischial tuberosities

Question 15

What connects to the perineal body

Answer 15

• External anal sphincter, bulbospongiosus, superficial transverse perineal muscles