Biology Hormones and menstrual cycle

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What are hormones
Chemical messages sent in the blood to activate target cells
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Where are hormones produced?
Glands
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Which hormones does the pituitary glands produce?
LH,FSH,ADH
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What do the ovaries produce?
oestrogen
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What does oestrogen do?
Controls the menstral cycle
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What does the pancreas produce?
insulin for the control of blood sugar
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What do the testes produce?
testosterone
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Whats different about the nerves to the hormones?
send fast message,act for a short time,act on precise area
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Whats stage 1 of the menstrual cycle?
The uterus lining breaks down for about 4 days
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Whats stage 2 of the menstrual cycle?
The lining of the womb builds up(from day 4 to 14) into a thick layer ready to receive a egg
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Whats stage 3 of the menstrual cycle?
An egg is developed and released from the ovary at day 14
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Whats stage 4 of the menstrual cycle?
If no fertilised egg has landed on the uterus wall by day 28 the lining breaks down and the whole cycle starts again
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FSH...
produced by pituitary gland,causes egg to mature in one of the ovaries,stimulates the ovaries to produce oestrogen
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Oestrogen...
produced in the ovaries,causes pituitary to produce LH,Inhibits the further release of FSH
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LH...
produced by the pituitary gland,stimulates the release of an egg at the middle of the menstrual cycle
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Card 2

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Where are hormones produced?

Back

Glands

Card 3

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Which hormones does the pituitary glands produce?

Back

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Card 4

Front

What do the ovaries produce?

Back

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Card 5

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What does oestrogen do?

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