CHAPTER 15 NOTES

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What is homeostasis?
Is the maintenance of a stable internal environment
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What are negative feedback loops?
Response mechanisms that reduce the effect of the original stimulus
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What are the 5 steps of the response system?
1. Stimulus. 2. Receptors detect change. 3. Control Centre. 4. Effector. 5. Response which restores original state.
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What are the two main groups of hormones?
Those synthesised from fatty acids: small and lipid soluble. 2. Those synthesised from amino acids: water soluble.
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What are the 5 special organs?
The eyes, ears, nose, tongue and skin.
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What types of receptors are there?
Photoreceptors, chemoreceptors and mechanoreceptors.
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What does a nerve consist of?
Dendrites, cell body, axon, myelin and node.
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What are negative feedback loops?

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Response mechanisms that reduce the effect of the original stimulus

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What are the 5 steps of the response system?

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What are the two main groups of hormones?

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What are the 5 special organs?

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