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1. Which hormone is responsible for ovulation? - ANSWER ✓ LH
(Luteinizing Hormone)
2. What happens during the luteal phase of the menstrual cycle? -
ANSWER ✓ Oestrogen decreases, progesterone increases due to
the corpus luteum.
3. What happens during the menstrual phase of the menstrual cycle? -
ANSWER ✓ Oestrogen and progesterone decrease and the
endometrial lining is shed.
4. What is the first stage of the menstrual cycle (that lasts 4-7 days)
known as? - ANSWER ✓ Menstrual Cycle
5. What is the second stage of the menstrual cycle (lasting 8-13 days)
known as? - ANSWER ✓ Follicular Phase
6. What is the third stage of the menstrual cycle, occurring at day 14,
known as? - ANSWER ✓ Ovulatory Phase
7. What is the final stage of the menstrual cycle known as? -
ANSWER ✓ Luteal Phase
, 8. What occurs during the follicular phase of the menstrual cycle? -
ANSWER ✓ FSH causes follicle maturation in the ovary.
Increased oestrogen causes the endometrium to thicken and
become a nourishing environment for a potential pregnancy.
9. Define Ovulation - ANSWER ✓ A period of heightened hormones
where a dominant follicle releases an egg into a Fallopian tube.
10. How long is an egg viable for following ovulation? -
ANSWER ✓ 1 day
11. What happens if an egg is not fertilised? - ANSWER ✓
Progesterone decreases, corpus luteum is reabsorbed and FSH
causes new follicles to start maturing.
12. Define capacitation - ANSWER ✓ The protective covering of
the acrosome of the sperm is removed.
13. What sort of reaction begins when a sperm comes into
contact with an egg? - ANSWER ✓ Cortical reaction - cortical
granules block any other sperm from entering the egg
14. How many chromosomes does a zygote contain? - ANSWER
✓ 46, in 23 homologous pairs
15. How many cells does the merula have? - ANSWER ✓ 8 to 16
16. How many cells does the blastocyst have? - ANSWER ✓ 16
to 32
17. How many days after ovulation can implantation occur? -
ANSWER ✓ 6 to 10 days