Which of the following acts as thermoregulator?
Correct answer: D. Hypothalamus
- A. Cerebrum
- B. Cerebellum
- C. Thalamus
- D. Hypothalamus
Explanation
The hypothalamus acts as the body's thermoregulatory centre by comparing blood temperature with a set point and coordinating sweating, shivering and changes in blood flow. Students may choose the thalamus because its name is similar and it relays sensory information, but it does not control body temperature.
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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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