Hormones, the menstrual cycle and reproduction

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42

Question 19

Figure 1 shows the changes in the relative blood concentrations of the ovarian hormones, estrogen and progesterone, during a typical 28-day menstrual cycle.

Figure 1: Ovarian hormone concentrations over a 28-day cycle

The concentration of progesterone peaks around Day 21.

State the effect of this peak in progesterone on the lining of the uterus (endometrium).

[1]

Hormones, the menstrual cycle and reproduction

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42

Question 19

Figure 1 shows the changes in the relative blood concentrations of the ovarian hormones, estrogen and progesterone, during a typical 28-day menstrual cycle.

Figure 1: Ovarian hormone concentrations over a 28-day cycle

The concentration of progesterone peaks around Day 21.

State the effect of this peak in progesterone on the lining of the uterus (endometrium).

[1]

Hormones, the menstrual cycle and reproduction

Question 19

Hormones, the menstrual cycle and reproduction Questions

Hormones, the menstrual cycle and reproduction

Question 19

Hormones, the menstrual cycle and reproduction Questions