9/ Nerves of Perineum and External Genitalia: Female

Question 1

Identify 1 - 2

Answer 1

1. Dorsal nerve of clitoris

2. Posterior labial nerves

Question 2

Identify 1 - 2

Answer 2

1. Dorsal nerve of clitoris

2. Posterior labial nerves

Question 3

Identify 3

Answer 3

3. Branches of perineal nerve (Superficial; Deep)

Question 4

Identify 4 - 6

Answer 4

4. Pudendal nerve in pudendal (Alcock’s) canal (dissected)
5. Perineal nerve
6. Inferior anal (rectal) nerves

Question 5

Identify 7

Answer 5

7. Anus

Question 6

Identify 8 - 10

Answer 6

8. Vagina
9. Urethra
10. Clitoris

Question 7

What does the pudendal nerve (somatic nerve) innervate?

Answer 7

The pudendal nerve (somatic nerve) innervates the skin and skeletal muscle of the female perineum and external genitalia.

Question 8

he pudendal nerve (somatic nerve) arise from __

Answer 8

the anterior rami of S2, S3, and S4 spinal cord levels.

Question 9

After emerging from the ___, the pudendal nerve divides into inferior anal (rectal) nerves, the perineal nerve, and the dorsal nerve of the clitoris.

Answer 9

pudendal (Alcock’s) canal

Question 10

After emerging from the pudendal (Alcock’s) canal

-> the pudendal nerve divides into ___ (3)

Answer 10

1. inferior anal (rectal) nerves
2. the perineal nerve
3. the dorsal nerve of the clitoris.

Question 11

Parasympathetic fibers arise from the S2-S4 levels
-> travel in (1)___ to (2)____ (2 plexuses)

-> stimulate vaginal secretions, erection of the clitoris, and engorgement of the bulbs of the vestibule (vasodilation of the arteries supplying the erectile tissue of the crus of the clitoris, clitoris, and vestibular bulb).

Answer 11

1. Pelvic splanchnic nerves

2. the inferior hypogastric plexus and uterovaginal plexus