Thermoregulation

• Thermoregulation

  Ability of an organism to keep its body temp within certain boundaries
• Body temp

  37-38 degrees
• What type of feedback is involved

  Negative feedback
• Temperature receptors

  Skin, blood vessels, brain
• Coordination centre for thermoregulation

  Hypothalamus
• 3 ways body can increase its temp

  Shiver

  Constrict blood vessels

  Raise body hairs
• 3 ways the body can decrease temperature

  Sweat

  Dilate blood vessels

  Lower body hairs
• Sweat

  As it evaporated is removes heaet energy from the skin
• Vasoconstriction

  Consriction of blood vessels to make them narrower.
• Vasodilation

  Dilation of blood vessels to make them wider
• Shivering

  Muscles contracting and relaxing automatically.

  Requires lots of energy from respiration and therefore releases hear energy as waste.