Scrotum and perineal vessels and nerves (dave's notes)

Question 1

Describe the subcutaneous tissue of the scrotum

Answer 1

It has no fat and is part of the panniculus carnosus (dartos muscle). It sends a sheet to the midline septum.

Question 2

What is the nerve supply of dartos?

Answer 2

Sympathetic nerves from the genital branch of the genitofemoral nerve.

Question 3

What does the dartos muscle overlie?

Answer 3

Colles’ fascia

Question 4

What is the arterial supply to the perineum? By what route does this artery reach the deep perineal pouch?

Answer 4

The internal pudendal artery enters the deep perineal pouch from the anterior end of the canal, passing along the ishiopubic ramus. It gives off three sets of arteries.

Question 5

What vein is responsible for most of the drainage of the corpora?

Answer 5

The deep dorsal vein

Question 6

What is the nerve supply to the perineum? What are its main branches?

Answer 6

The pudendal nerve gives off an inferior rectal branch then divides into dorsal nerve of the penis and the perineal nerve