B1.11- Homeostasis

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  • Homeostasis
  • Decrease in body temperature
    • Erector muscles in dermis contract
      • Body hairs stand upright
        • Traps air next to skin as insulation
    • Blood vessels get narrower
      • Blood is flowing further away from surface of skin
        • Insulation
  • Negative feedback
  • Hypothalamus controls temperature


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