biology- hormones

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  • Created by: fia21
  • Created on: 11-04-14 17:49
define:hormone
chemical messages which travel in blood to activate a target cell
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what do hormones do?
control things in organs that need constant adjustment
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how are hormones produced?
pituitary gland and ovaries
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what hormone does ovaries produce?
oestrogen
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which hormones do pituitary glands produce
FSH and LH
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whats fsh and lh stand for
follicule stimulating hormone, luteinizing hormone
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define: menstrual cycle
monthly release of a womens egg from her ovaries and the building up and breaking down of her uterus
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what happens at stage 1 of the menstrual cycle
the uterus lining breaks down for 4 days
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stage 2
the lining builds back up
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stage 3
an egg is released from the ovary at day 14
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stage 4
the wall id maintained for 14 days until 28 days if no fertilisation happens the lining will break down again
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what does fsh do?
causes eggs to mature, stimulates the ovaries
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what does lh do?
stimulates the release of the egg at the middle of the cycle
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what does oestrogen do?
causes the pituitary gland to produce lh, inhibits the further release of fsh
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Card 2

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what do hormones do?

Back

control things in organs that need constant adjustment

Card 3

Front

how are hormones produced?

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Card 4

Front

what hormone does ovaries produce?

Back

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Card 5

Front

which hormones do pituitary glands produce

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