The Menstrual Cycle

Question 1

Name the three main hormones in menstruation.

Answer 1

LH, FSH and Oestrogen.

Question 2

What does FSH do?

Answer 2

Causes an egg to mature and the ovaries to produce oestrogen.

Question 3

What does LH do?

Answer 3

Causes a fertilised egg to be released.

Question 4

What does Oestrogen do?

Answer 4

Causes the pituitary gland to produce LH.

Question 5

Describe menstruation.

Answer 5

Bleeding occurs on day one as the uterus lining breaks down. The uterus then builds up again, ready for a fertilised egg. About 14 days in, a mature egg is released. If the egg is fertilised, it will burrow into the uterus, if not, it will get flushed out when the uterus breaks down.