Menstrual Cycle

Question 1

Give 4 features of FSH:

Answer 1

1) Produced in pituitary gland
2) Causes an egg to mature in of the ovaries, in a structure called a follicle
3) Stimulates the ovaries to produce oestrogen
4) Oestrogen then inhibits the release of FSH

Question 2

Give 3 features of oestrogen:

Answer 2

1) Produced in the ovaries
2) Causes the lining of the uterus to grow
3) Stimulates the release of LH (causes the release of an egg)

Question 3

Give 2 features of LH:

Answer 3

1) Produced by the pituitary gland
2) Stimulates the release of an egg at day 14 (ovulation)

Question 4

Give 3 features of progesterone:

Answer 4

1) Produced in the ovaries by the remains of the follicle after ovulation
2) Maintains the lining of the uterus during the second half of the cycle, when the level of progesterone falls, the lining breaks down
3) Inhibits the release of LH and FSH

Question 5

What are the 4 stages of menstruation?

Answer 5

1) Menstruation starts, the uterus lining breaks down for about 4 days
2) The uterus lining builds up again, ready to receive a fertilised egg
3) An egg develops and is released, ovulation, at day 14
4) The wall is then maintained, if no fertilised egg has landed the spongy lining starts to break down