12 Questions
What is the percentage of body heat contributed by inactive skeletal muscles at rest?
20-30%
What is the effect of a 10°C rise in temperature on the rate of reactions?
Increase of 10%
What is the lowest temperature at which convulsions occur?
410°C
What is the temperature difference between the rectum and mouth?
~0.40°C higher
What is the average body temperature?
37.0°C (maintained range = 35.8-38.20°C)
What organs are the primary sources of heat production at rest?
Liver, heart, brain, kidneys, and endocrine organs
What is the primary function of blood in thermoregulation?
To facilitate heat transfer between the body core and shell
When the body needs to conserve heat, what does blood do?
It bypasses the skin to slow down heat loss
What is the percentage of body heat loss that occurs through radiation?
50%
What is the term for the transfer of heat between objects in direct contact with each other?
Conduction
What is the term for the heat energy removed from the body when 1 gram of water is vaporized?
0.5 kcal
What is the role of the hypothalamus in thermoregulation?
To integrate thermoregulatory centres
Test your understanding of how the human body maintains its temperature at rest and during exercise, including the key organs involved in heat production and the factors that influence body temperature. Learn about the balance between heat production and heat loss, and how physical activity can modify body temperature.
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