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Which of the following is not a response of human body during cold winters? 1) constriction of peripheral blood vessels 2) decrease in secretion of thyroid stimulating hormone 3) shivering 4) increase in basal metabolic rate Plz answer this question with suitable explanation...

Which of the following is not a response of human body during cold winters? 
1) constriction of peripheral blood vessels
2) decrease in secretion of thyroid stimulating hormone 
3) shivering 
4) increase in basal metabolic rate
Plz answer this question with suitable explanation...

Grade:12th pass

1 Answers

Simran Vinaik
askIITians Faculty 1231 Points
2 years ago
When body temperature drops due to external cold, an important component of protection is vaso-constriction of skin and limb blood vessels.The major adjustments in cold are to shiver to increase heat production, and constrict blood vessels in the periphery and skin. This helps to minimize heat loss through the skin, and directs blood to the vital internal organs.
Cold weather increases our BMR. In cold environments, our body adapts quickly by stimulating smooth muscle contractions (i.e., shivering) in order to generate heat. Shivering requires caloric energy to generate heat.

Wrong statement is 2) as TSH increases in winters

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