Menstrual Cycle Practice Questions

The graph below shows the relative levels of two hormones, oestrogen and hormone Q, during a woman’s menstrual cycle.

(a) What effect does the build up of oestrogen have from day 9 to day 14? [1]

(b)(i) Name hormone Q and the part of the body where it is produced. [2]

(ii) Which event is caused by a fall in the level of hormone Q? [1]

(iii) What would be indicated if the high level of hormone is to continue beyond day 24? [1]
ANSWERS
(a) Repair of uterine lining and an increase in the thickness of the uterine lining;

(b)(i) Progesterone; Ovary;
(ii) Menstruation, shedding of the uterine lining and blood through the vagina;
(iii) Fertilization which leads to implantation, that is, pregnancy has occurred;