Homostatis

ashleighcattell
Mind Map by , created about 6 years ago

GCSE Biology (Term 1) Mind Map on Homostatis, created by ashleighcattell on 09/28/2013.

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ashleighcattell
Created by ashleighcattell about 6 years ago
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Homostatis
1 Homostatis is maintaining a stable internal enviroment
2 Factors Include
2.1 Temperature
2.1.1 Water
2.1.1.1 Blood Glucose (Sugars)
2.1.1.1.1
2.1.1.2
2.1.2 osmoregluation
2.1.2.1 ectasy wipes this from the brain
3 Every cell needs water
3.1 Every cell needs glucose for energy
4 Warmth
4.1 When its hot, we sweat
4.1.1 Glands try to pump out the heat by sweat
4.1.1.1 Evaperation carries heat away
5 Coldness
5.1 When its cold, the erect gland contracts causing:
5.1.1 hairs to stand
5.1.2 goosebumps to form
6 Capillaries
6.1 Vasodilation
6.1.1 blood vessles get wider when hot
6.1.1.1 Evaperation from skin
6.2 Vasoconstriction
6.2.1 blood vesseles get thinner when cold
6.2.1.1 heat rises causing a thin layer of warm air above the skin
7 Hypeothaiamus
7.1 negative feedback acts to appose a change
7.1.1 normal - tempature increase or decrease detected - correct action - normal again

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