TeachMeAnatomy

Question 1

what is the arterial supply of the penis?

Answer 1

branches of the internal pudendal artery (a branch of anterior division of internal iliac):
- dorsal artery
- deep arteries of penis
- bulbourethral artery

Question 2

venous drainage of penis

Answer 2

Venous blood is drained from the penis by paired veins. The cavernous spaces are drained by the deep dorsal vein of the penis – this empties into the prostatic venous plexus. The superficial dorsal veins drain the superficial structures of the penis, such as the skin and cutaneous tissues.

Question 3

lymphatic drainage of penis

Answer 3

penile skin: superficial inguinal nodes

glans: to deep inguinal and external iliac nodes

erectile tissue and penile urethra: to internal iliac lymph nodes

Question 4

what is the innervation of the testes and epididymis?

Answer 4

testicular plexus – a network of nerves derived from the renal and aortic plexi.

Question 5

testes lymphatic drainage

Answer 5

Since the testes are originally retroperitoneal organs, the lymphatic drainage is to the lumbar and para-aortic nodes, along the lumbar vertebrae.

Question 6

scrotum lymphatic drainage

Answer 6

superficial inguinal

Question 7

prostate gland innervation

Answer 7

The prostate receives sympathetic, parasympathetic and sensory innervation from the inferior hypogastric plexus.

Question 8

prostate gland lymphatic drainge

Answer 8

internal iliac lymph nodes mainly

Question 9

seminal vesicles lymphatic drainage

Answer 9

The lymphatic drainage of the gland is the external and internal iliac lymph nodes.

Question 10

vulva lymphatic drainage

Answer 10

superficial inguinal lymph nodes

Question 11

vagina lymphatic drainage

Answer 11

Superior – drains to external iliac nodes
Middle – drains to internal iliac nodes
Inferior – drains to superficial inguinal lymph nodes.

Question 12

ectocervix epithelium

Answer 12

The ectocervix is the portion of the cervix that projects into the vagina. It is lined by stratified squamous non-keratinized epithelium.

Question 13

endocervix epithelium

Answer 13

The endocervical canal (or endocervix) is the more proximal, and ‘inner’ part of the cervix. It is lined by a mucus-secreting simple columnar epithelium.

Question 14

uterus lymphatic drainage

Answer 14

fundus - pre-aortic
body: external iliac nodes

Question 15

fallopian tubes lymphatic drainage

Answer 15

via ovarian vessels to the para-aortic nodes and uterine vessels to the internal iliac chain

some drainage also to the inguinal nodes via the round ligament

Question 16

vas deferens lymphatic drainage

Answer 16

lumbar and external iliac nodes