Human body thermostat is:
Correct answer: D. Hypothalamus
- A. Medulla
- B. Medulla oblongata
- C. Body fluid
- D. Hypothalamus
Explanation
The hypothalamus in the brain is the master switch that works as a thermostat to regulate the body's core temperature. When our internal temperature changes, sensors in the central nervous system send messages to the hypothalamus. In response, it sends signals to various organs and systems in the body. They respond with a variety of mechanisms. If the body needs to cool down, the mechanisms include: sweating, and vasodilation. If the body needs to warm up, the mechanisms include vasoconstriction, thermogenesis, and hormonal thermogenesis.
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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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