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Hormones and Nerves (nerves (very fast action, act for very short time,…
Hormones and Nerves
nerves
very fast action
act for very short time
act on a precise area
hormones
slower action
act for a long time
act in a more general way
main hormones
FSH
produced by the pituitary gland
causes the egg the mature in the ovaries
stimulates the ovaries to produce the oestrogen
oestrogen
produced on the ovaries
causes pituitary to produce LH
inhibits further release of FSH
LH
produced in the pituitary gland
stimulates the release of the egg
chemical messengers that is travel through the blood
the pituitary gland
produces homones
FSH
Follicle-Stimulating Hormone
LH
Luteinising Hormone
overies
produce oestrogen
menstrual cycle
4 stages
stage 1: when the bleeding starts
stage 2: the lining od the uterus builds up
stage 3: an egg is released
stage 4: the wall is maintained