If body is overheated, the body temperature can be regulated by
Correct answer: D. More sweating, vasodilation
- A. More sweating, vasoconstriction
- B. Less sweating, vasodilation
- C. Less sweating, vasoconstriction
- D. More sweating, vasodilation
Explanation
When the body is overheated, sweating and vasodilation are the primary mechanisms employed to regulate body temperature. Sweating helps to dissipate heat through evaporation, while vasodilation allows for increased blood flow to the skin, facilitating heat loss. However, if these mechanisms are insufficient to cool the body adequately, other physiological responses may be triggered, such as increased respiration rate and seeking cooler environments. Nonetheless, if the body's core temperature continues to rise excessively, it can lead to heat-related illnesses such as heat exhaustion or heatstroke.
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About Thermoregulation
Thermoregulation maintains body temperature through negative feedback controlled mainly by the hypothalamus. It covers vasodilation and vasoconstriction, sweating, shivering, changes in metabolic heat production and behavioural responses, while distinguishing heat loss by radiation, conduction, convection and evaporation from temperature regulation itself.
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