1. Low level of progesterone at start of cycle; allows menstruation
2. FSH released from pituitary gland
3. FSH stimulates growth of egg
4. Maturing follicle stimulates oestrogen; causes uterus wall thickening
5. High oestrogen concentration stimulates release of LH from pituitary glad
6. High LH= Ovulation (egg release)
7.Corpus luteum forms
8. Increase in progesterone; causes uterus lining to thicken
9. Increase in progesterone inhibits release of FSH + LH
10. End of menstruation,falling of progesterone+oestrogen triggers mentruation- cycle begins again
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