Bio 3.5 Controlling Body Temperature

  1. I apoligies for any shortening of words EG Temperature (Temp) and so on. Hope it wasnt to much of a disadvantage.
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  • Created by: Dan
  • Created on: 31-03-13 13:46
What temperature must the body be controlled at?
37 Degrees centigrade
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Where is blood Temperature monitored?
Thermoregulatory centre in the brain
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How is this monitored?
The centre has receptors which detect temp of blood flow through the brain
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Where else is Temperature monitored?
The skin
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How?
Temp receptors in the skin also send impulses to the brain carrying info on temp
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If Temp rises, what happens to blood vessels near the skin?
They dilate, increasing blood flow through capillaries
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How does this help reduce body temp?
Energy is transferred by radiation and the skin is cooled
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If Temp rises what happens to sweat glands?
Sweat glands produce more sweat.
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Why is this helpful is reducing body temp?
Energy needed for water evaporation comes from skins surface.
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If Temp falls, what happens to blood vessels near the skin?
Blood vessels near the surface of the skin CONSTRICT
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How does this increase body temperature?
Less blood flows through skin capillaries reducing energy radiated
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If Temp falls, what happens to the muscles?
Muscles CONTRACT quickly
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How does this help increase body temp?
This requires respiration and some of the energy is used to heat the blood
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State what happens when pupils (Eyes) dilate?
Pupils widen
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State what happens when pupils constrict?
Pupils get smaller
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What happens to muscles when we get cold?
They CONTRACT
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What happens to blood vessels when we get cold?
They CONSTRICT
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Other cards in this set

Card 2

Front

Where is blood Temperature monitored?

Back

Thermoregulatory centre in the brain

Card 3

Front

How is this monitored?

Back

Preview of the front of card 3

Card 4

Front

Where else is Temperature monitored?

Back

Preview of the front of card 4

Card 5

Front

How?

Back

Preview of the front of card 5
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