Question
Discuss how feedback mechanisms maintain body temperature during exposure to extreme environmental conditions.
Answer :
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The human body maintains a stable internal temperature through feedback mechanisms, primarily involving the hypothalamus, which acts as the body’s thermostat. When exposed to extreme cold, thermoreceptors in the skin and hypothalamus detect a drop in body temperature. This triggers the hypothalamus to initiate heat-conserving and heat-producing responses. Vasoconstriction of peripheral blood vessels reduces blood flow to the skin, minimizing heat loss. Additionally, shivering occurs, generating heat through rapid, involuntary muscle contractions. The hypothalamus also stimulates the release
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