Practice Questions

1.Which hormone causes an egg to mature in the ovary?

FSH (Follicle Stimulating Hormone)

2.Describe the role of oestrogen in the menstrual cycle.

Rebuilds and thickens the uterus lining after menstruation

Inhibits FSH to prevent multiple eggs maturing at the same time

Stimulates LH release, which triggers ovulation

3.Explain why high progesterone levels prevent pregnancy from occurring again immediately.

High progesterone maintains the uterus lining and inhibits FSH and LH, so no new egg matures or ovulation occurs, preventing another pregnancy.