What is thermoregulation?

Thermoregulation is the ability of an organism to keep its body temperature within certain boundaries.

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Roughly what temperature is the human body?

37-38 °C.

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What type of feedback is involved in thermoregulation?

Negative feedback.

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Where in the body are receptors that detect temperature?

  1. Skin.


  1. Blood vessels.


  1. Brain.

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What is the coordination centre for thermoregulation called?


Where is it located?

The thermoregulatory centre.


It is found in the hypothalamus of the brain.

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Give 3 ways the body can increase its temperature.

1Contract erector muscles and raise body hairs.


2Shiver.


3Constrict blood vessels near the skin. 

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Give 3 ways the body can decrease its temperature.

1Relax erector muscles and lower body hairs.


2Sweat.


3Dilate blood vessels near the skin. 

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How does sweating cool the body?

As sweat evaporates it removes heat energy from the skin.

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What is vasoconstriction?

The constriction of blood vessels.


This means that the blood vessels get narrower. 

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What is vasodilation?

The dilation of blood vessels.


This means the blood vessels get wider. 

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How does shivering warm the body?

Shivering involves muscles contracting and relaxing automatically.


This requires a lot of energy from respiration, and the process of respiration releases a lot of heat energy as waste.

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