Menstrual Cycle

Question 1

FSH

Answer 1

Realised in the pituitary gland
Causes follicle to mature
Stimulates oestrogen production

Question 2

Oestrogen

Answer 2

Realised by ovaries
Causes lining of the uterus to thicken and grow
High level stimulates an LH surge

Question 3

LH

Answer 3

Realised by pituitary gland
Causes ovulation
Stimulates the remains of the follicle to develop into a corpus lutetium structure

Question 4

Progesterone

Answer 4

Released by the corpus lutetium after ovulation
Maintains lining of the uterus
Prevents the release of LH and FSH
When low levels of oestrogen and progesterone falls the uterus lining break down
Low progesterone allows LH to increase and the cycle starts again

Question 5

Stage one

Answer 5

Day 1
First start bleeding
Lining of uterus breaks down and is released

Question 6

Stage two

Answer 6

Day 4 - 14
uterus lining is repaired until it becomes a thick spongy layer full of blood vessels ready for a fertilised egg to implant there

Question 7

Stage three

Answer 7

Day 14

Egg is developed and released (ovulation)

Question 8

Stage four

Answer 8

Day 14 - 28
Lining is maintained
If no fertilised egg is implanted then the wall breaks down on day 28 and the whole cycle starts again

Question 9

Follicle

Answer 9

Egg and its surrounding cells