Hormonal Regulation Of Fem

Question 1

At the start of the cycle, the hypothalamus does what

Answer 1

Secrets GnRH

Question 2

GnRH stimulates what gland to produce what two hormones

Answer 2

AntPitGland to release FSH and LH

Question 3

FSH and LSH then stimulate what to grow, mature and produce sex hormones

Answer 3

The follicles

Question 4

The FSH and LH stimulating the follicles, overall causes what hormone to be produced and how much of it

Answer 4

Low levels of Oestrogen

Question 5

Low levels of oestrogen produced from the follicles, exert what feedback on what

Answer 5

Negative feedback on hypothalamus

Question 6

Negative feedback on hypo and AntPitG inhibits the release of what hormones

Answer 6

FSH and LH

Question 7

Inhibin is produced by what

Answer 7

The granulosa cells, which are the cells of the secondary and vesicular follicles

Question 8

Inhibin does what

Answer 8

Exerts negative feedback and so controls FSH release

Question 9

High levels of oestrogen produced by the dominant follicle, around the 14th day, causes what

Answer 9

Positive feedback on the hypo

Question 10

The positive feedback causes what to happen which aids in what

Answer 10

High levels of LH and causes ovulation

Question 11

After ovulation, why does oestrogen level decline

Answer 11

Damage to the oestrogen secreting follicle during ovulation

Question 12

The increased level of LH stimulates what 2 things

Answer 12

1) primary oocyte completes first meiotic division

2) develops corpus luteum (lutenising hormone)

Question 13

The LH causes The corpus luteum to produce what hormone

Answer 13

Progesterone

Question 14

Why is progesterone needed

Answer 14

Help maintain pregnancy

Question 15

Rise of progesterone and some oestrogen in the last 14 days of th cycle cause what

Answer 15

Inhibit oogenesis by stopping GnRH and FSH production. Exert negative feedback.

Question 16

Oestrogen and progesterone stimulate the thickening of what

Answer 16

Endometrium

Question 17

In absence of pregnancy, what happens to levels of progesterone and oestrogen and endometrium

Answer 17

Decline rapidly and endo sheds causing menstrual bleeding

Question 18

If pregnancy occurs, the production of hormones is overtaken by

Answer 18

Placenta

Question 19

Developing placenta produces what

Answer 19

HCG, human chronic gonadotropin

Question 20

Look at HCG thing

Answer 20

Cool

Question 21

Regular hormonal changes that commence at puberty affects what

Answer 21

Ovarian and uterine menstrual cycle