First Week Of Development

Question 1

At puberty, the female begins to undergo regular monthly cycles. These sexual cycles are controlled by ?

Answer 1

The hypothalamus

Question 2

Name the hormone produced by the hypothalamus that acts on cells of the anterior pituitary gland, which in turn secrete gonadotropins

Answer 2

GnRH(gonadotropin releasing hormone)

Question 3

At the beginning of each ovarian cycle, ———to ————primary
(preantral) stage follicles are stimulated to grow under the influence of—————?

Answer 3

15 to 20
Follicles stimulating hormone(fsh)

Question 4

There is gonadotropin hormone that is not necessary to promote the development of primordial follicles to the primary follicle stage, though without it primary follicles die and become atretic ,TRUE OR FALSE

Answer 4

True

Question 5

Name the gonadotropin hormone that is talked about in question 4

Answer 5

Follicle stimulating hormone

Question 6

When a follicle becomes atretic, the oocyte and surrounding follicular cells degenerate and are replaced by connective tissue, forming a ———-

Answer 6

Corpus atreticum

Question 7

———- stimulates maturation of follicular (granulosa) cells surrounding the oocyte. In turn, proliferation of these cells is mediated by ———-

Answer 7

,Fsh
,Growth differentiation factor 9(gdf9)

Question 8

If the oocyte is fertilized, degeneration of the corpus luteum is prevented by ————-,a hormone secreted by the ————of the developing embryo.

Answer 8

,Beta human chorionic gonadotropin (hCG)
,syncytiotrophoblast

Question 9

What stimulates the growth and development of the primordial follicle

Answer 9

Fsh

Question 10

What’s activated at puberty in females ?

Answer 10

The hypothalamo-pituitary-ovarian axis

Question 11

What make up the primordial follicle

Answer 11

Primary oocyte+granulosa cells +theca cells

Question 12

What hormone brings about changes in the uterine endometrium

Answer 12

Estrogen

Question 13

Estrogen gives a positive feedback for the release of ————

Answer 13

Lh

Question 14

LH acts on granulosa cells which in turn produces ————-hormone

Answer 14

Progesterone

Question 15

Granulosa cells have receptors for both LH and FSH ,true or false

Answer 15

True

Question 16

What’s enzyme is responsible for the conversion of androgens to estrogen by granulosa cells

Answer 16

Aromatase

Question 17

What hormone cause ovulation

Answer 17

LH

Question 18

State any 3 functions of estrogen

Answer 18

1)It’s gives a negative feedback to the release of fsh
2)it brings about proliferative changes in the uterine endometrium
3)it gives a positive feedback to the release of LH

Question 19

Which uterine phase consides with the follicular phase in the ovaries

Answer 19

Proliferative phase

Question 20

Rapturing of the graffian follicles leads to the development of —-?

Answer 20

Corpus leuteum

Question 21

Which hormone causes the rapturing of the graffian follicle

Answer 21

LH

Question 22

The ———hormone produced by the corpus leuteum brings about secretory changes in the uterine endometrium

Answer 22

Progesterone

Question 23

When do we have maximum production of progesterone

Answer 23

8 days after ovulation