In a hot summer after noon, if your body's Homeostatic machinery keep your internal temperature quite lower than that of external than this is an example of____________?
Correct answer: B. Negative feed back
- A. Positive feed back
- B. Negative feed back
- C. Feed back
- D. Osmoregulation
Explanation
Negative feedback opposes a change: when body temperature rises, mechanisms such as sweating and vasodilation lower it toward the normal set point. Students may choose positive feedback because the response follows a temperature change, but positive feedback amplifies the original change rather than correcting it.
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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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