Biology Unit 3.3 Temperature Control & Homeostasis

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What does the processing centre do?
Receives information and then it coordinates our response.
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What do effectors do?
Produce a response to ensure our (e.g.) temp stays at 37*C.
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What is negative ffedback? What does it control?
Ensures in any control system that any changes are reversed and returned to the set level. Body temperature, blood oxygen levels and salt levels.
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The thermoregulatory centre is in the ...
Brain.
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What happens to enzymes if temperature gets too high?
They become denatured, and stop working.
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What is the hypothalamus?
The processing centre in the brain that controls the body temperature.
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How does the body lose heat?
We sweat, which cools us once evaportaed. Blood vessels dilate, to allow heat energy to radiate from the body (vasodilation).
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How does the body maintain heat?
Blood vessels constrict, to minimise heat loss by radiation (vasoconstriction). We shiver, which increases respiration in the muscles to produce heat. Hairs stand up to trap air for insulation.
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Card 2

Front

What do effectors do?

Back

Produce a response to ensure our (e.g.) temp stays at 37*C.

Card 3

Front

What is negative ffedback? What does it control?

Back

Preview of the front of card 3

Card 4

Front

The thermoregulatory centre is in the ...

Back

Preview of the front of card 4

Card 5

Front

What happens to enzymes if temperature gets too high?

Back

Preview of the front of card 5
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