Penis (Task 2)

Question 1

Bulbospongiosus muscle function

Answer 1

Empty residual urine and sperm from urethra

Helps maintain erection by increasing pressure in bulb of the penis

Question 2

Ischiocavernosus muscle function

Answer 2

Forces blood into corpus cavernosa to maintain erection

Question 3

Erectile tissue which starts in the bulb, contains the urethra and ends in the glans of the penis

Answer 3

Corpus Spongiosum

Question 4

Erectile tissue formed from the left and right crura which run up each side of the penis

Answer 4

Corpus Cavernosa

Question 5

Blood supply to penis

Answer 5

Dorsal Arteries, Deep Arteries, Bulbourethral Artery

All branches of Internal Pudendal which comes from Internal Iliac

Question 6

Venous drainage of penis

Answer 6

Deep and Superficial Dorsal Veins > Prostatic Plexus

Question 7

Innervation of penis

Answer 7

S2-S4
Dorsal Nerve of Penis (Branch of Pudendal)
Cavernous Nerves from Peri-Prostatic Plexus

Question 8

Lymphatic drainage of penis

Answer 8

Inguinal Nodes

Question 9

Innervation of internal urethral sphincter

Answer 9

Sympathetic fibres from T10-L2 via Hypogastric Plexus

Question 10

Innervation of external urethral sphincter

Answer 10

Somatic fibres from S2-S4 via Pudendal Nerve

Question 11

Homolog of female sex organs in prostate

Answer 11

Utricle

Question 12

Nerves involved in erection

Answer 12

Parasympathetic innervation from sacral splanchnic

Question 13

Treatment for priapism

Answer 13

Needle Drainage or Sympatheticomimetic Drugs

Question 14

When urethra develops in incorrect position

Answer 14

Hypospadias