Perineum

Question 1

What is the urogenital triangle?

Answer 1

Contains external openings of urethra and vagina

Question 2

Where is the superficial perineal pouch located? What is contained within it?

Answer 2

Te superficial perineal pouch is between the membranous layer of superficial fascia and the perineal membrane.

Contains:
Root
Bulb (male) or vestibular bulb (female)
Corpus spongiosum in male
Crura of penis/clitoris (form corpora cavernosa) and are invested in by ischiocvernous muscles
Muscles: bulbospongiosus muscle, ischiocaverernosus muscles, superficia transverse perinei muscles
Gland (greater vestibular glands in females)

Question 3

Where is the deep perineal pouch?

Answer 3

Is the space superior to the perineal membrane, space betwene the perineal membrane and superior fascia of the urogenital diaphragm
Posterior boundary is the superior fascia of UG diaphragm and perineal membrane fused between ischial tuberosities

Question 4

What is contained in the deep perineal pouch in males?

Answer 4

Sphincter urethrae muscles
Deep transverse perineal muscles
Internal pudendal artery and vein
branches of perineal nerve
bulbourethral glands

Question 5

What is contained in the deep perineal pouch in females?

Answer 5

Sphincter urethrae muscle (pierced by urethra and vagina)
Deep transverse perineal muscles
Internal pudendal artery and vein
Branches of perineal nerve
(NOT greater vestibular glands, the female homolog of bulbourethral glands)

Question 6

What is the border of the anal triangle?

Answer 6

Tip of coccyx to ischial tuberosities and along a line between the ischial tuberosities (extends from skin to pelvic diaphragm)
Anal canal opening is in middle of anal triangle

Question 7

What artery nad what nerve supply the perineum

Answer 7

Internal pudendal artery and the pudendal nerve (ventral rami of S2-S4)