Estrous Cycle I

Question 1

What are the 3 Functions of the Estrous Cycle?

Answer 1

1. Ovum Development
2. Uterine Preparation
3. Breeding Readiness

Question 2

What time period defines the Estrous Cycle?

Answer 2

“Heat to Heat”

Question 3

What is the term for Ovum Development?

Answer 3

Oogenesis

Question 4

How does the uterus change in preparation for attachment?

Answer 4

1. Thickened Walls
2. Increased Glandular Content

Question 5

What vaginal change occurs during the Estrous Cycle?

Answer 5

Cornified Epithelium for protection during breeding

Question 6

What 3 things control the Estrous Cycle?

Answer 6

GnRH, Circadian Rhythm and Temperature.

Question 7

What are 4 Effects of Estrogen?

Answer 7

1. LH Secretion
2. Inhibits FSH
3. Behavior Change
4. Reproductive Tract Changes

Question 8

What does FSH stimulate?

Answer 8

The maturing of one or more Ovum

Question 9

What does LH stimulate?

Answer 9

Ovulation (The releasing of the Ovum from the Ovary)

Question 10

What cells release Estrogen?

Answer 10

Granulosa Cells

Question 11

As LH is released to stimulate ovulation, what happens to FSH?

Answer 11

Decreases

Question 12

What 2 things are present in an animal that is ready to breed?

Answer 12

1. Pheromones
2. Standing/Receptive Behavior

Question 13

After the Corpus Luteum develops from the granulosa cells, what happens to Estrogen levels?

Answer 13

Decrease

Question 14

What hormone maintains pregnancy?

Answer 14

Progesterone

Question 15

What hormone does the Corpus Luteum secrete?

Answer 15

Progesterone