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LU 5: THERMOREGULATION (Temp. limits (-2C to +50C (Cyprinodon diabolis…

- - - - Mammal
      - Birds
  - - - Invertebrates
      - Fish
      - Amphibians
- - - - used to room temp
        
        anoxia lack O2
        
        susceptible to cold
- - - - Arctic & Antarctic fish
- - - - Behavioural adaptation
        
        control heat product or loss
      - sympathetic nervous system
        
        Vasoconstriction, Vasodilation - Blood vessel
        
        Sweating - Sweat gland
      - Motor neuron
        
        shivering
- - - - increase heat
  - - - low blood flow near surface body
        
        reduce heat loss
  - - - hair stand trap warm air
  - - - thick fur
        
        form subcutaneous fat
    - - thin fur
        
        fat and hide hibernation