Multiple choice general knowledge science & technology

Which of the following helps keep body cool?

  1. Respiration

  2. Perspiration

  3. Mastication

  4. Urination
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Perspiration (sweating) is the body's primary cooling mechanism. When sweat evaporates from the skin surface, it absorbs heat energy from the body, causing a cooling effect. This process is called evaporative cooling. Respiration is for gas exchange (oxygen/carbon dioxide), mastication is chewing, and urination is waste excretion - none of these primarily function in temperature regulation like perspiration does.

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