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Flashcards in The Stallion Deck (14):
1

Which glands are present in the horse?

- 2 seminal vesicles
- 2 bulbourethral
- prostate

2

What are the layers of the sccrotum?

- skin
- tunica dartos
- fascia
- vaginal tunic (extends from abdo through inguinal canal)

3

How soon after birth do the testes descend?

- first 2 weeks

4

What are the function of sertoli cells and Leydig cells?

Sertoli cells sperm development, blood testes barrier
Leydig cells produce steroid hormones

5

What age do colts produce ejaculate?

14 months

6

How long is the sperrm production cycle?

57d

7

what may damage to the sertoli cells result in?

antisperm autoantibody production

8

What is the deferent duct?

tube from cauda of epidydimis through spermatic cord

9

What are the glands of the ductus deferens?

Ampullae

10

What are the accessory glands and what is their purpose?

- seminal vesicles: seminal plasma
- Prostate: seminal plasma
- Bulbourethral glands: function unclear

11

which muscle surrounds the urethra?

urethralis muscle - strited, contractsin ejaculation

12

What substances do Leydig cells produce?

Testosterone and Oxytocin (OT facilittes pulstile contraction of seminiferous tubules to help evacuate sperm)

13

What substances do sertoli cells produce?

inhibin and activin (regulate spermatogenesis)
And oestrogens?

14

How many ejaculations per day can most stallions produce?

2-3 in season