Point 4 of 10 — Lesson 4: Menstrual Cycle, Fertilization, Embryonic Development and ContraceptionQuestion bank: 2 questions (2 with pictures)
04Contraception (birth control)
Contraceptive pills — contain a mixture of syntheticoestrogen and progesterone. Taken from after menstruation for about 3 weeks. They inhibit ovulation(by feedback inhibition of FSH and LH).
Intrauterine device (IUD, the coil) — placed in the uterus lumen; prevents theimplantationof the fertilised egg.
Condom — a barrier that prevents sperms from entering the vagina (also protects from infections).
Surgical sterilisation — in a woman, the two Fallopian tubes are tied and cut (tubal ligation) so the ova cannot meet the sperms; in a man, eachvas deferens is tied and cut (vasectomy) so no sperms are ejaculated (semen is still produced, hormone production is unchanged).
📝 Question bank for this point
2 questions linked to this point only, 2 of them with pictures.
