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Physiology

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Endocrinology

Question
4 out of 8
 

The hormones associated with cold adaptation is:



A GH
B Thyroxine

C Insulin
D Melanocyte stimulating hormone

Ans. B Thyroxine

Temperature increasing mechanism when body is too cold:

I. Skin vasoconstriction

II. Piloerection

III. Increased heat production by

a. Shivering - heat production 4 to 5 times of normal

b. Sympathetic excitation - Nor-adrenaline Non-shivering thermogenesis

c. Thyroxine secretion - a long term cause of heat production

Shivering primary motor centre for shivering is located in the Dorsomedial portion of the posterior hypothalamus.