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HORMONES
FSH
The hormone FSH is secreted by the pituitary gland. FSH makes two things
happen:
it causes an egg to mature in an ovary
it stimulates the ovaries to release the hormone oestrogen
Oestrogen
The hormone oestrogen is secreted by the ovaries. Oestrogen makes two
things happen:
it stops FSH being produced - so that only one egg matures in a cycle
it stimulates the pituitary gland to release the hormone LH
LH
The hormone LH causes the mature egg to be released from the ovary.
Progesterone
Progesterone is a hormone secreted by ovaries. It maintains the lining of the
uterus during the middle part of the menstrual cycle and during pregnancy.…read more

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MENSTRUAL CYCLE
The levels of oestrogen and progesterone change during the
menstrual cycle.…read more

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