Reproduction And Growth

Question 1

What is the role of oestrogen in the menstrual cycle?

Answer 1

-Oestrogen levels rise from day 1 to peak just before day 14
-Thickens uterus lining
-Inhibits FSH and LH release

Question 2

What is the role of progesterone in the menstrual cycle?

Answer 2

-(Progesterone stays low from day 1 – 14 and starts to rise once ovulation has occurred)
-Thickens uterus lining
-Inhibits FSH and LH

Question 3

Complete the sentences about the menstrual cycle:
Hormones control the release of an egg from a woman’s ——–. This process is called ———–. Hormones also control the thickness of the ——– ———–. Menstruation occurs and as part of this the ——— ——– is broken down and shed.

Answer 3

Hormones control the release of an egg from a woman’s OVARY. This process is called OVULATION. Hormones also control the thickness of the UTERUS LINING. Menstruation occurs and as part of this the UTERUS LINING is broken down and shed.

Question 4

What is the role of FSH (follicle-stimulating hormone) in the menstrual cycle?

Answer 4

-Matures the follicle
-Triggers oestrogen release

Question 5

What is the role of LH (luteinising hormone) in the menstrual cycle?

Answer 5

-Causes ovulation
-Triggers progesterone release

Question 6

Describe how hormones control the menstrual cycle

Answer 6

-FSH stimulates the maturation of the follicle/egg/ovum
-Oestrogen inhibits FSH and stimulates LH
-LH stimulates ovulation
-Progesterone inhibits FSH and LH
-Oestrogen and progesterone maintain/thicken the lining of the uterus