Frostbite - damage to skin because of exposure to cold temperatures, vasoconstriction - blood vessels near the skin tighten to prevent heat loss, normal body temperature - 98.6, shivering - muscles contract and relax to generate heat, goose bumps - hair follicles stand up to trap air by the skin- allowing for insulation, thermoregulation - ability to maintain a stable internal temperature, hypothermia - dangerous condition when the core body temperature drops too low,

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