THE MENSTRUAL CYCLE Flashcards
Where is oestrogen produced?
oestrogen is produced in the ovaries
What does oestrogen do?
causes the pituitary gland to produce LH and inhibits the further release of FSH
What does FSH stand for?
follicle stimulating hormone
Where is FSH produced?
FSH is produced in the pituitary gland
What does FSH do?
causes an egg to mature in the ovaries and stimulates ovaries to produce oestrogen
What does LH stand for?
luteinising hormone
Where is LH produced?
LH is produced in the pituitary gland
What does LH do?
stimulates the release of an egg at around the middle of the menstrual cycle.
What happens at stage one of the menstrual cycle?
bleeding starts - this is when the lining of the uterus breaks down for about four days
What happens at stage two of the menstrual cycle?
the lining of the uterus builds up, this is so it is ready to receive a fertilised egg - from day 4 to day 14
What happens at stage three of the menstrual cycle?
an egg is released from the ovary at day 14
What happens at stage four of the menstrual cycle?
The wall is maintained for about 14 days until day 28, if no fertilised egg has landed on the uterus wall by day 28 the lining starts to break down and the whole cycle starts again.
