B3.2 - Menstrual Cycle

Question 1

Explain the role of FSH in the menstrual cycle

Answer 1

Causes egg to mature in ovary

Stimulates the ovaries to produce oestrogen

Question 2

Explain the role of oestrogen

Answer 2

Causes lining of the uterus to thicken and grow
Stimulates the production of LH
Inhibits the production of FSH - only one egg is released in each cycle .

Question 3

Explain the role of LH

Answer 3

Stimulates the release of an egg at day 14 (ovulation)

Stimulates progesterone production

Question 4

Explain the role of progesterone

Answer 4

Maintains lining of the uterus
Progesterone levels are low and low oestrogen levels lining breaks down.
Inhibits FSH and LH production
Low progesterone = increase in FSH , cycle starts again