2.3 Histology: Male Reproductive

Question 1

Scrotum:

Answer 1

The bag of skin that holds and helps to protect the testicles

Question 2

Prepuce:

Answer 2

technical term for foreskin, lies over the glans penis

Question 3

what happens to the Bulbus glandis when a dog becomes aroused?

Answer 3

When a dog becomes aroused, the bulbus glandis swell with blood, creating two readily visible bumps.

Question 4

Spermatic cord:

Answer 4

is a structure composed of the testicular artery and veins that form the pampiniform plexus, lymphatics and the deferent duct

Question 5

The septa extends from ?

Answer 5

the tunica albuginea across the testis dividing it into lobules

Question 6

The lobules are composed of

Answer 6

convoluted seminiferous tubules

Question 7

Answer 7

Question 8

PAS stain:

Answer 8

PAS is a stain which generally labels polysaccharides magenta (pink-purple). This means it particularly highlights the basement membrane around the tubule.

Question 9

Why is the basement membrane important?

Answer 9

It provides a partial barrier around the tubule, and provides the substrate on which Sertoli cells attach

Question 10

What is secreted by the Leydig cells?

Answer 10

testosterone
- These cells have a ‘foamy’ appearance due to the presence of lipid droplets and granules.

Question 11

Can you explain the appearance of tubules and cells from your knowledge of the architecture of the organ?

Answer 11

Seminiferous tubules are surrounded by lymph spaces in the interstitium and Leydig cells. These tubules are lined by Sertoli cells.
Germ cells differentiate and mature in compartments between the Sertoli cells.