Ovarian Follicle Activity

Question 1

_________ begins at puberty when LH and FSH levels rise and fall with each estrous cycle

Answer 1

Graafian follicle development

Question 2

Ovarian Follicle Activity

Answer 2

1. Follicular Growth
2. Ovulation
3. Corpus Luteum formation and regression

Question 3

Follicular growth:
1. Interstitial cells surround the basement membrane of the granulosa cells to form the ________, which differentiates into__________

Answer 3

Theca (interna and externa)

Question 4

Follicular growth:
2. As thecal cells are formed around the follicle, ______ develop among them, increasing in size and are concentrated in the ______ close to the basement membrane that separates the theca interna cells from the granulosa cells

Answer 4

thecal capillaries;
theca interna

Question 5

Follicular Growth:
3. LH receptors form on the cells of the ____________

and receptors for FSH and estrogen form on the __________

Answer 5

theca interna;
granulosa cells

Question 6

Follicular growth:
4. ________are produces by the theca interna cells under LH influence and diffuse to the granulosa cells

Answer 6

Androgens

Question 7

Follicular growth:
5. Granulosa cells convert _______ to ________under ______ influence, causing growth and division of granulosa cells, and
formation of the _____

Answer 7

androgens;
estrogens;
FSH influence;
formation of antrum

Question 8

Follicular growth:
6. occurs 24 hours before ovulation and causes a
________in the number of FSH receptors on granulosa cells to reduce estrogen production

Answer 8

LH output surge;
reduction in FSH receptors

Question 9

Ovulation:
_____ surrounds oocyte post-ovulation

Answer 9

Corona radiata

Question 10

Ovulation is spontaneous in most species except

Answer 10

cat,
mink,
rabbit,
ferret

Question 11

requires coitus to ovulate

Answer 11

Reflex ovulators

Question 11

Ovulation:
________ is swept to the uterine tubes by fimbriae

Answer 11

oocyte together with gelatinous fluid

Question 12

CL formation involves

Answer 12

Luteinization of granulosa

Question 13

CL formation involves luteinization of granulosa:
Granulosa function changes from _______ secretion to _________secretion

Answer 13

estrogen secretion to progesterone secretion

Question 14

CL formation involves luteinization of granulosa:
________ is also needed for CL maintenance in sheep

Answer 14

Prolactin

Question 14

Corpus Luteum Formation and Regression:
______ released by the nonpregnant uterus is the natural luteolytic substance,
causing CL regression

Answer 14

PGF2a

Question 14

CL formation involves luteinization of granulosa:
CL maintenance is provided by

Answer 14

LH surge and basal LH concentration

Question 15

PGF2a released by the nonpregnant uterus is the natural luteolytic substance,
causing CL regression:

Close proximity of ovarian vein (which returns blood from ovary and uterus) to ovarian artery
provides diffusion of PGF2a from vein to artery, ensuring PGF2a supply to regress CL

Answer 15

True