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Question 49 of 56

Q.Which part of the human brain is concerned with the regulation of body temperature?

(a) Medulla oblongata
(b) Cerebellum
(c) Hypothalamus
(d) Cerebrum
Puducherry TnboardTamil Nadu HSC First Year (DGE) Board 2025MCQ· 1mImportance★★★★★
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The hypothalamus acts as the body's thermostat, sensing blood temperature and coordinating responses (sweating, shivering, vasodilation/vasoconstriction) to keep body temperature constant.

The hypothalamus contains thermosensitive neurons that continuously monitor the temperature of circulating blood. When body temperature rises above the set point, the hypothalamus triggers heat-loss mechanisms such as sweating and vasodilation of skin blood vessels. When body temperature falls below the set point, it triggers heat-generating/heat-conserving mechanisms such as shivering (involuntary muscle contraction) and vasoconstriction of skin blood vessels.

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