pelvic floor & perineum

Question 1

bulbospongiosus

Answer 1

O and I: runs anteriorly from perineal body to clitoris (females) or penile raphe (males)
N: pudendal nerves (S2-S4)
A: females- compresses greater vestibular gland
males- assists in erection

Question 2

superficial transverse perineal body

Answer 2

O: ischial ramus
I: perineal body
N: pudendal nerve (S2-S4)
A: holds the pelvic organs in place
closes the urethra

Question 3

external anal sphincter

Answer 3

O and I: encircles anus (runs posteriorly from perineal body to anococcygeal ligament)
N: pudendal nerve (S2-S4)
A: closes anus

Question 4

ischiocavernosus

Answer 4

O: ischial ramus
I: crus of clitoris or penis
N: pudendal nerve (S2-S4)
A: maintains erection by squeezing blood into corpus cavernosum of clitoris or penis