homeostasis

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  • homeostasis
    • body temperature
      • cold
        • no sweat
        • hairs stand up - creating an insulating layer of air.
        • shiver - muscles contract which releases energy keeping them warm.
        • blood vessels supplying skin capillaries constrict closing off blood supply.
      • hot
        • best 37 degrees
        • sweat produced by glands - evaporate cooler.
        • blood flows closer to the skin.
        • blood vessels supplying the skin dilte.
    • maintenance of  constant internal environment
    • maintaining body balance.
      • blood sugar levels
        • amount of sugar coming in and energy needed must be balanced.
    • 2 poisonous waste products produced.
  • cold
    • no sweat
    • hairs stand up - creating an insulating layer of air.
    • shiver - muscles contract which releases energy keeping them warm.
    • blood vessels supplying skin capillaries constrict closing off blood supply.

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