Urogenital Triangle

Question 1

Perineum

Answer 1

Diamond shaped structure consisting of urogenital and anal triangles

Question 2

3.6 Boundaries of Perineum

Answer 2

Anterior: pubic symphysis
Lateral: ischiopubic rami, ischial tuberosities, sacrotuberous ligaments
Posterior: Coccyx and sacrum

Question 3

Dividing Line between Anal and Urogenital Triangles

Answer 3

Line between ischial tuberosities

Question 4

Inferior Rectal Nerves

Answer 4

Run through Camper’s fascia in anal triangle to rectum

Question 5

Pudendal Canal (Alcock’s)

Answer 5

Canal in anal triangle, just medial to obturator internus muscle containing internal pudendal vessels, and pudendal and perineal n.s

Question 6

Pudendal Nerve Block

Answer 6

Nerve runs around ischial spine, so for childbirth they can palpate it and anesthetize all around it

Question 7

Perineal Raphe

Answer 7

Line bw vagina and anus

Question 8

Difference between Penis and Clitoris (besides size)

Answer 8

Males: urethra runs through, F: runs inferior to

Question 9

2 Layers of Superficial Fascia on Penis (superficial-deep)

Answer 9

Camper’s fascia - fatty

Colle’s fascia - fibrous, derived from Scarpa’s

Question 10

2 Borders and 3 Muscular Contents of Superficial Perineal Pouch

Answer 10

Superficial: Colle's fascia
Deep: Perineal membrane
Ischiocavernosus m.
Bulbospongiosus m.
Superficial transverse perineal m.

Question 11

Ischiocavernosus muscle

Answer 11

Runs from ischium to cavernosal portion of penis/clitoris (covers erectile tissue)

Question 12

Bulbospongiosus muscle

Answer 12

Covers spongiosus portion of erectile tissue

Question 13

Blood Supply of Superficial Perineal Space (4 and common source)

Answer 13

Come off internal pudendal a.
Posterior scrotal/labial a.s
Perineal a.s
Dorsal a.s of penis/clitoris
Deep a. of penis/clitoris

Question 14

Nerves of Superficial Perineal Space (4 and common source)

Answer 14

Come off pudendal n.
Posterior scrotal/labial n.s
Perineal n.s
Dorsal n.s of penis/clitoris
Deep n. of penis/clitoris

Question 15

Greater Vestibular (Bartholin’s) Gland in Females

Answer 15

Under bulb, secretes fluid into vaginal area

Question 16

3 Muscles of Deep Perineal Pouch

Answer 16

Sphincter urethrae m.
Deep transverse perineal m.
Sphincter vaginae m. (female)

Question 17

2 Borders of Deep Perineal Pouch

Answer 17

Superficial: Perineal membrane and deep: superior layer of urogenital diaphragm

Question 18

Blood Supply of Deep Perineal Pouch (3 and source)

Answer 18

Come off internal pudendal a.
Artery to the bulb
Deep a. of penis/clitoris
Perineal a.

Question 19

Nerves of Deep Perineal Pouch (3 and source)

Answer 19

Come off pudendal n.
Nerve to the bulb
Deep n. of penis/clitoris
Perineal n.

Question 20

Anterior Recess of Ischiorectal Fossa

Answer 20

Fatty recess above superior layer of urogenital diaphragm and lateral to levator ani m.

Question 21

2 Contents of Deep Perineal Pouch

Answer 21

Membranous urethra

Bulbourethral glands - males only