5. Fertility control

Question 1

V brief overview of menstruation and ovulation

Answer 1

LH surge causes ovulation and following that causes the formation of the corpus luteum, and progesterone and oestrogen peak then drop in progesterone causes menstruation

If can stop ovulation we can stop fertility

Question 2

What is the trigger for ovulation

Answer 2

LH surge is trigger for ovulation

If want to block ovulation need to block the LH surge

Question 3

What blocks LH and therefore ovulation?

Answer 3

Progesterone has negative feedback on LH so if give progesterone block ovulation

During pregnancy, progesterone level is v high and that blocks further ovulation

Question 4

What do female oral contraceptives do?

Answer 4

Prevent ovulation
Thicken cervical mucus
Hostile endometrium