Follicular phase, Waves, Oogenesis, and Ovulation MCQ's

Question 1

Under which of the following conditions does estradiol have positive feedback. (check all that apply)
absence of the corpus luteum
when a dominant follicle is present
when inhibin is high
when progesterone is low or absent

Answer 1

absence of the corpus luteum
when progesterone is low or absent

Question 2

Where is progesterone produced?
in granulosa cells
in theca interna cells
in small or large luteal cells
in secondary follicles

Answer 2

in small or large luteal cells

Question 3

A primary folicle has multiple layers of follicle cells which are called theca and granulosa cells.
True
False

Answer 3

False

Question 4

The growth of a primordial to primary to secondary follicle is dependent on FSH.
True
False

Answer 4

False

Question 5

A follicle which no longer converts androgen to estrogen will begin to secrete androgen (testosterone) that will trigger further atresia of this follicle.
True
False

Answer 5

True

Question 6

During recruitment, which of the following occur? (check all that apply)
An increase in circulating FSH
Presence of FSH receptors on granulosa cells.
Presence of LH receptors on granulosa cells.
Presence of LH receptors on theca cells.
Secretion of inhibin.
A decrease in circulating FSH.
Estrogen production by granulosa cells of follicles.

Answer 6

An increase in circulating FSH
Presence of LH receptors on theca cells.

Question 7

If a cow can have 2 or 3 follicluar waves in an estrous cycle, how many does a human have during a menstrual cycle?
1
2
3
none

Answer 7

1

Question 8

FSH increases at about the time the first dominant follicle of the estrous cycle reaches maximal size because inhibin production declines at this time.
True
False

Answer 8

True

Question 9

In the ovary, which of the following cells will divide mitotically.
Oogonia
primary oocyte
secondary oocyte
first polar body

Answer 9

Oogonia

Question 10

The germinal vesicle of a primary oocyte is the nucleus of that oocyte.
True
False

Answer 10

True

Question 11

At which stage of prophase does the primary oocyte become arrested and progresses no further in meiosis until puberty?
leptotene
leptotene
dipliotene or dictyotene
zygotene

Answer 11

dipliotene or dictyotene

Question 12

The corona radiata have gap junctions with the primary oocyte of the preovulatory follicle. The gap junctions allow the oocyte maturation inhibitor to be transfered to the oocyte to maintain oocyte arrest.
True
False

Answer 12

True

Question 13

The effect of Oocyte Maturation Inhibitor (OMI) is to maintain high levels of cAMP in the oocyte and thereby ensure the oocyte remains in meiotic arrest.
True
False

Answer 13

True

Question 14

Cumulus cells expand around the oocyte in response to FSH and do so because they produce hyaluronic acid and proteins.
True
False

Answer 14

False

Question 15

The LH surge causes the breakdown of tight junctions between corona radiata cells and the oocyte.
True
False

Answer 15

False

Question 16

PGF is used to manipulate ovulation by:
causing regression of the corpus luteum.
simulating hormones produced by CL.
directly stimulating ovulation
none of the above.

Answer 16

directly stimulating ovulation

Question 17

GnRH is used to manipulate ovulation by
causing regression of the CL.
stimulating hormones produced by the CL.
directly stimulating ovulation.
none of the above.

Answer 17

directly stimulating ovulation.

Question 18

Progestins used to manipulate ovulation by
causing regression of the CL.
simulating hormones produced by the CL.
directly stimulates ovulation.
none of the above.

Answer 18

none of the above.