Human Body Temperature Regulation
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Questions and Answers

What is the percentage of body heat contributed by inactive skeletal muscles at rest?

  • 30-40%
  • 40-50%
  • 10-20%
  • 20-30% (correct)
  • What is the effect of a 10°C rise in temperature on the rate of reactions?

  • Increase of 5%
  • Increase of 10% (correct)
  • Increase of 20%
  • Decrease of 5%
  • What is the lowest temperature at which convulsions occur?

  • 400°C
  • 420°C
  • 430°C
  • 410°C (correct)
  • What is the temperature difference between the rectum and mouth?

    <p>~0.40°C higher</p> Signup and view all the answers

    What is the average body temperature?

    <p>37.0°C (maintained range = 35.8-38.20°C)</p> Signup and view all the answers

    What organs are the primary sources of heat production at rest?

    <p>Liver, heart, brain, kidneys, and endocrine organs</p> Signup and view all the answers

    What is the primary function of blood in thermoregulation?

    <p>To facilitate heat transfer between the body core and shell</p> Signup and view all the answers

    When the body needs to conserve heat, what does blood do?

    <p>It bypasses the skin to slow down heat loss</p> Signup and view all the answers

    What is the percentage of body heat loss that occurs through radiation?

    <p>50%</p> Signup and view all the answers

    What is the term for the transfer of heat between objects in direct contact with each other?

    <p>Conduction</p> Signup and view all the answers

    What is the term for the heat energy removed from the body when 1 gram of water is vaporized?

    <p>0.5 kcal</p> Signup and view all the answers

    What is the role of the hypothalamus in thermoregulation?

    <p>To integrate thermoregulatory centres</p> Signup and view all the answers

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