Male reproduction

Question 1

Function and role of males?

Answer 1

recognize females in heat, produce and store sperm, form and deposit sperm into females.

Question 2

what are the male reproductive system composed of? (6)

Answer 2

Testis
Epididymis
Ductus deferens
Scrotum
Penis & prepuce
4 accessory sex glands..

Question 3

What are the 4 accessory sex glands?

Answer 3

1x Ampullae of ductus deferens
2x (vesical glands)Seminal vesicles
1x Prostate gland
2x Bulbourethral glands

Question 4

Testes produce?

Answer 4

spermatozoa and testosterone

Question 5

Where is the spermatozoa produced?

Answer 5

In the seminiferous tubules which lie in loops and take up most space of each testicle.

Question 6

Where are the testicles located?

Answer 6

In the abdominal cavity during the fetal period and then move down to the scrotum through the inguinal canal
* The inguinal canal is often open so that the testicles can be pulled up into the abdomen in young animals when stimulated or cold

Question 7

Tunica albuginea?

Answer 7

White connective tissue capsule surrounding the testicles

Question 8

What types of tissue is testicular tissue made of?

Answer 8

yellowish, granular and shiny tissue

Question 9

What are the 3 important cells in the seminiferous tubules?

Answer 9

Sertoli cells-embryonic cells
Leydig cells-endocrine cells(between seminiferous tubules)
Germ cells

Question 10

Sertoli cells, function and location?

Answer 10

nurse function for germ cells and spermatozoa during develeopment.
Connect with eachother and form blood-testis barrier, which controls the growth environment of the spermatozoa and prevent sperm from penetrating supporting tissue.

On the base of the seminiferous tubules and extend into the center.
They aso divide the seminiferous tubules in 2 compartments.

Question 11

What are the 2 compartments?

Answer 11

Basal compartment and adluminal compartment

Question 12

Function of the basal compartment?

Answer 12

communicate with interstitial fluid and provide space for germinal epithelial cells.

Question 13

Function of the adluminal compartment?

Answer 13

This is the space between sertoli cells, it communicates centrally with the lumen of the tubule.

Question 14

Leydig cells, location and function?

Answer 14

In the connective tissue surrounding the seminiferous tubules. Produce testosteroneand other male hormones when luteinizing hormone is present.
Are not heat sensitive and therefore function normally in cryptorchids.

Question 15

Functions of testosterone?

Answer 15

Stimulate sperm maturation
stimulate the gonads to produce semen
Necessary for development of sexual characteristics and normal mating behavior.

Question 16

Germ cells?

Answer 16

Precursors to the formation of gametes (sperm and egg cells)
Are in 5 development stages and end as mature gametes.

Question 17

What are the 2 stages of spermatogenesis?

Answer 17

Spermatocytogenesis
Spermiogenesis

Question 18

function of epididymis and location?

Answer 18

Move sperm cells from the testes to the ductus deferens, absorb liquid, sperm maturation and storage.

Attached to and along the testicles, covered by peritoneum (tunica vaginalis).

Question 19

What are the 3 parts of the epididymis?

Answer 19

Caput (head), corpus (cody), cauda (tail)

Question 20

Urethra

Answer 20

Runs from the bladder/ductus deferens and exits at the end of the penis
* Transfer both urine and semen
* Here the sperm concentrate from the testicles mixes with seminal fluid that comes from the accessory sex glands