body temperature

• how is body temperature controlled?

  • temperature receptors detect the core body temperature is too hot or cold
  • the thermoregulatory centre receives information and triggers the effectors
  • effectors produce a response and counteract the change
• what does the body do when the temperature is too hot?

  sweat - transfers energy to the environment

  vasodilation - blood flows closer to the surface of the skin
• what does the body do when the temperature is too cold?

  hairs stand up - traps insulating layer of air

  vasoconstriction

  shivering - needs respiration which transfers energy to warm the body