topic 5 pgs 75-79

Question 1

how many stages are in the menstrual cycle? and describe them?

Answer 1

1)-4
2)-v
-stage1 -Day 1 the menstruation starts
>the uterus lining breaks down for about 4 days

-stage2 -The uterus lining builds up again
>from day 4 to 14, into a thick spongy layer full of blood vessels, ready to receive a fertilised egg

-stage3 - An egg develops and is released from the ovary at day 14 (called ovulation)

-stage4 - the wall is then maintained for about 14 days until day 28
>if no fertilised egg is in the uterus by day 28 the spongy lining starts to break down, and the cycle repeats

Question 2

what are the 4 hormones that control the menstrual cycle

Answer 2

1)-Follicle-Stimulation Hormone (FSH)
2)-Oestrogen
3)-Luteinising Hormone (LH)
4)-Progesterone

Question 3

What is FSH? and where is it produced?

Answer 3

1)-hormone that causes the egg to mature in a ovaries, in a structure called follicle
>and it stimulates the ovaries to produce oestrogen
2)-it is produced in the pituitary gland

Question 4

Where is oestrogen produced? and what does it do?

Answer 4

1)-produced in the ovaries
2)-it causes the lining of the uterus to grow
>also stimulates the release of LH

Question 5

where is LH produced? and what does it do?

Answer 5

1)-Produced in pituitary gland
2)-stimulates the release of an egg at day 15

Question 6

where is Progesterone produced? and what does it do?

Answer 6

1)-produced in the ovaries
2)-maintains lining of the uterus during the 2nd half of the cycle
>also inhibits release of LH and FSH

Question 7

what hormone can be used to reduce fertility?

Answer 7

oestrogen

Question 8

different types of contraceptives? (3 things)

Answer 8

-condom
-diaphragm
-spermicide

Question 9

other way a women can get pregnant

Answer 9

IVF