Menstrual Cycle

Question 1

What is the first phase of the menstrual cycle?

Answer 1

Menstrual flow phase

Question 2

What days is the menstrual flow phase over?

Answer 2

Days 1-5

Question 3

What happens in the follicle/proliferative phase? (4)

Answer 3

• FSH from the pituitary gland stimulates growth of ovarian follicles
• growing follicle releases oestrogen
• oestrogen stimulates endometrium to rebuild
• ovulation

Question 4

What days are the follicle/proliferative phase over?

Answer 4

Days 6-14

Question 5

What phase is days 15-28?

Answer 5

Luteal/secretory phase

Question 6

What happens during the luteal phase?

Answer 6

• corpus luteum produces progesterone > causes more build up and maintains endometrium

Question 7

What happens if fertilisation does not occur?

Answer 7

Corpus luteum breaks down&raquo_space; progesterone secretion stops&raquo_space; endometrium breaks down

Question 8

What day does ovulation occur?

Answer 8

Day 14

Question 9

When in the cycle does temperature spike?

Answer 9

At ovulation

Question 10

What is the left over follicle called after the egg is released?

Answer 10

Corpus luteum

Question 11

In what order to the 2 key hormones appear in?

Answer 11

Estrogen, then progesterone

Question 12

What is the hormonal trigger for menstruation?

Answer 12

No HCG from embryo&raquo_space; corpus luteum breaks down&raquo_space; progesterone secretion stops&raquo_space; endometrium breaks down