Male Reproductive system

Question 1

What is the difference between Sertoli and Leydig cells?

Answer 1

Sertoli cells provide nourishment to developing sperm and absorb the extra cytoplasm they will shed.
Leydig cells secrete androgen, testosterone, and regulate production of LH.

Question 2

Select the correct option; Secondary spermatocytes are

a) a result of meiosis I of secondary spermatogonia
b) a result of mesiosis II of secondary spermatogonia
c) a result of meiosis I of primary spermatocytes
d) a result of meiosis II of primary spermatocytes

Answer 2

c) a result of meiosis I of primary spermatocytes

Question 3

Differentiate spermiation from spermiogenesis.

Answer 3

Spearmiation is release of sperm that have undergone spermiogenesis hence it is the release of spermatozoa into the lumen of the seminiferous tubules; while spermiogenesis is forming spermatozoa from spermatid.within the seminiferous tubules

Question 4

What are the 4 changes a spermatid goes through during spermiogenesis?

Answer 4

1. Acrosome formation
2. Loss of large proportion of cytoplasm
3. Formation of head, body, and tail
4. Condensation of nucleus

Question 5

Where do spermatozoa obtain full motility?

Answer 5

epidydymis

Question 6

What is the role of LH in spermatogenesis?

Answer 6

binds to receptors on Leydig cells = testosterone production –> binds to Sertoli cells = promote spermatogenesis

Question 7

What is the function of FSH?

Answer 7

Stimulates Sertoli cells to produce testicular fluid

Question 8

Which gland produces FSH?

Answer 8

Anterior pituitary gland

Question 9

Give a brief overview of the process of spermatogenesis.

Answer 9

*MNEMONIC; PleaSe GO TO Cite ID's ZOo
P - Primordial germ cells 
S - Spermatogonial stem cells
GO - SpermatoGOnia (Type A and B) 
TO Cite - SperTOCytes (Primary undergo meiosis 1 and secondary undergo meisosis 2) 
ID's - Spermatids 
ZOo - Spermatozoa

Question 10

The site for spermatogenesis is the …

Answer 10

seminiferous tubules

Question 11

The tunica albuginea covers the ….

Answer 11

outer surface of the testes

Question 12

Give the pathway for the movement of sperm up until the penis.

Answer 12

Lumen of seminiferous tubules –> rete testes –> efferent ductules –> epididymis –> vans deferens –> ejaculatory duct (formed by seminal vesicle and vans deferens) –> urethra

Question 13

How and when do PGCs arrive at the gonads?

Answer 13

Week 2 (formation of PGCs in epiblast) 
Week 3 (migration to yolk sac) 
Week 4 (migration to developing gonads) 
Week 5 (arrival at gonads)