Menstrual Cycle

Question 1

FSH (follicle stimulating hormone)

Answer 1

FSH is released from the pituitary gland when progesterone and oestrogen levels are low. FSH causes the egg to mature in the follicle and stimulates oestrogen levels to rise

Question 2

Oestrogen

Answer 2

Oestrogen is released from the ovaries, causing the lining of the uterus to build up. High levels cause a surge of LH

Question 3

LH (lutenising hormone)

Answer 3

LH is released from the pituitary gland, stimulating ovulation

Question 4

Progesterone

Answer 4

Progesterone is produced from the corpus luteum. It maintains the lining of the uterus. If an egg is fertilised oestrogen and progesterone levels remain high

Question 5

Day 1-4 (of the menstrual cycle)

Answer 5

Menstruation

Question 6

Day 4-14

Answer 6

Uterus lining builds up

Question 7

Day 14

Answer 7

Ovulation

Question 8

Day 14-28

Answer 8

Uterus lining is either maintained or broken down

Question 9

IVF (in vitro fertilisation)

Answer 9

1) Clomefene therapy so the pituitary gland can release more LH and FSH
2) Eggs are collected and fertilised by fathers sperm cells in a Petri dish in the lab
3) The fertilised eggs are left in an incubator to grow
4) Embryos are inserted into woman’s uterus

Question 10

IVF advantages

Answer 10

-ability to have children

Question 11

IVF disadvantages

Answer 11

-1 in 4 success rate
-stressful
-risk of multiple births