HOMEOSTATIS Revision :) P/E

Key Words ;

  • Effector
  • Hypothalamus
  • Hypothermia
  • Receptor
  • Vasoconstriction
  • Vasodilation
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Body Temperature

Energy Loss & Engery Gain from your body need to be balanced so that your body temperature remains constant.

Controlling Body Temperature Requires;

  • Temperature RECEPTORS in the skin to detect the external temperature.
  • Temperature RECEPTORS in the brain to measure the temperature of the blood.
  • The Brain, which acts as a precessing centre, to recieve information from the temperature receptors, responding by triggering the effectors.
  • Effectors (sweat glands and muscles) to carry out the automatic responce.

If your body temperature is TOO HIGH, heat needs to be transferred to the environmnent. This is done by sweating, since evaporation from the skin requires heat energy from the body.

If your body temperature is TOO LOW, your body will start to shiver. Shivering is the rapid contraction and release of muscles. These contractions require energy from increased respiration, & heat is released as a by-product, warming surrounding tissue.

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