Homeostasis and Response - Periods Flashcards
1
Q
How many days does the menstural cycle last?
A
28
2
Q
Stage 1 of the cycle - days 1 to 4
A
Mensturation - breakdown of uterus lining
3
Q
Stage 2 of the cycle - days 4 to 14
A
The lining starts to thicken and becomes thick and spongy with lots of blood vessels, in order to prepare for a fertilised egg.
4
Q
Stage 3 of the cycle - one day
A
ovulation - egg is released from the ovaries
5
Q
Stage 4 of the cycle
A
maintaining the uterus lining
6
Q
What are the four hormones involved with the menstural cycle?
A
- FSH
- Oestrogen
- LH
- Progesterone
7
Q
What doe FSH do?
A
FSH matures the egg and stimulates the release of oestrogen
8
Q
What does oestrogen do?
A
Thickens the uterus lining and inhibits FSH, whilst stimulating LH.
9
Q
What does LH do?
A
Stimulates ovulation
10
Q
What does progesterone do?
A
Maintains uterus lining and inhibits LH and FSH.
