nerves and hormones

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Eyes
Sensitive to light
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Ears
Sensitive to change in position and sound
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Skin
Sensitive to pressure, temperature change and pain
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Tongue and nose
sensitive to chemicals
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Light receptor cells have...
...nucleus, cytoplasm and cell membrane
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Neurones
Information from receptors is passed along Neurones and then to the brain
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Reflex action
Receptor->sensory Neurone->central nervous system->chemical message across the synapse->relay neurone->motor neurone->effector
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Effector
A muscle or a gland
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Synapse
The junction in a nerve where messages are passed in the form of chemicals
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Hormones are secreted by...
...glands
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Hormones are transported to organs by...
...the bloodstream.
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FSH (follicle stimulating hormone)
Secreted by the pituitary gland, causes eggs to mature in the ovaries and stimulates the production of oestrogen
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LH (lutenising hormone)
Stimulates the release of eggs from the ovary
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Oestrogen
oestrogen is secreted by the ovaries and inhibits the further production of FSH.
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Oral contraceptives may contain...
...Oestrogen, to enhibit egg maturation
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Birth control pills...
...contains large amounts of oestrogen, resulting in severe side effects
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IVF (In vetro fertilisation)
Gives a mother LH and FSH to enhibit egg maturation
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Card 2

Front

Sensitive to change in position and sound

Back

Ears

Card 3

Front

Sensitive to pressure, temperature change and pain

Back

Preview of the back of card 3

Card 4

Front

sensitive to chemicals

Back

Preview of the back of card 4

Card 5

Front

...nucleus, cytoplasm and cell membrane

Back

Preview of the back of card 5
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