Pelvic Perineal Myology

Question 1

What is the erectile tissue in females?

Answer 1

Crua of the clitoris, bulbs of the vestibule,

Question 2

What is the main function of the ischiocavernosus and bulbospongiosus muscle?

Answer 2

Compress venous drainage

Question 3

What are the muscles of the urogenital diaphram?

Answer 3

External urethral sphincter m

Deep transverse perineal m

Question 4

What innervates the external urethral sphincter in the male and female?

Answer 4

Dorsal nerve of the penis

Dorsal nerve of the clitoris

Question 5

What muscle attaches the external urethral sphincter to the lateral walls?

Answer 5

Compressor urethral M.

Question 6

What additional muscle do females have to constrict the external urethral sphincter and vagina?

Answer 6

Urethrovaginal muscle

Question 7

What innervates the external anal sphincter?

Answer 7

Inferior rectal n

Question 8

What three muscles make up the levator ani Ms?

Answer 8

Puborectalis, pubococcygeus, iliococcygeus muscles.

Question 9

What are the muscle that make up a complete pelvic diaphram?

Answer 9

Coccygeus M, levator ani Ms

Question 10

What muscles make up the superficial perineal muscles?

Answer 10

Superior transverse perineal M.
Bulbospongiosus M.
Ischiocavernois M.

Question 11

What is obturator fascia?

Answer 11

Parietal membranous pelvic fascia

Question 12

What is the function of the obturator internus m?

Answer 12

Lateral rotator

Question 13

What is the function on the pisiformis m?

Answer 13

External rotator and abduction

Question 14

What muscle helps maintain the anorectal flexure?

Answer 14

Puborectalis M

Question 15

What is the innervation to the superficial perineal muscles?

Answer 15

Deep perineal N.

Question 16

How is the deep transverse perineal M described in females?

Answer 16

Smooth muscular mass along the posterior edge of the perineal membrane.

Question 17

What innervates the internal anal sphincter?

Answer 17

Parasympathetic fibers from pelvic splanchnic nerves