menstrual cycle and contraceptive pills
FSH
it causes an egg to mature in an ovaryit stimulates the ovaries to release the hormone oestrogen.
Oestrogen
it stops FSH being produced - so that only one egg matures in a cycleit stimulates the pituitary gland to release luteinizing hormone (LH), which triggers ovulation (the release of the mature egg from the ovary).
Oral contraceptives: contain oestrogen to inhibit FSH
GK
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