Female Repro Physiology II

Question 1

Only follicles that grow during _____ are candidates for ovulation

Answer 1

Luteolysis

Question 2

Why do non-dominant follicles become atretic?

Answer 2

Inhibin from dominant follicle inhibits FSH

Question 3

Why is the dominant follicle impervious to its own inhibin?

Answer 3

Dominant follicles are LH-dependent, not FSH-dependent

Question 4

True or false: Follicular waves can occur outside of the estrous cycle

Answer 4

True

Question 5

Diapedesis

Answer 5

Passage of blood cells through capillary walls

Question 6

Why does vaginal bleeding occur in dogs during proestrus?

Answer 6

NOT menstrual bleeding

Diapedesis of RBCs in uterine endrometrium/vaginal mucosa

Under influence of estradiol 17B

Question 7

Effects of Estrogen on Reproductive Tract

Answer 7

My Little Green Elephant Gathers Many Bugs

1) Myometrial tone increases
2) Leucocytosis
3) Genital swelling
4) Electrical conductivity (impedance/resistance decreases)
5) [Uterine] Gland growth
6) Mucosal secretion (cranial vagina/cervix)
7) Blood flow (hyperemia)

Question 8

hCG

Answer 8

• Human Chorionic Gonadotropin
• Mimics LH
• Used to induce super-ovulation
• Ovulation will occur in 36 hours if follicles are ready

Question 9

What induces estrus behavior?

Answer 9

Estradiol/estrogen acting on hypothalamus