HISTOLOGY
INTEGUMENTARY SYSTEM SKIN
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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constrict
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dilate
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Either A or B
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None of the above
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Detailed explanation-1: -Normally, the vessels that supply blood to the skin constrict or narrow in response to cold temperatures. This reaction, called “vasoconstriction, ‘’ decreases blood flow to the skin, which helps to minimize heat loss from the warm blood and therefore preserve a normal internal or “core” temperature.
Detailed explanation-2: -Blood vessels leading to the skin capillaries become wider-they dilate-allowing more blood to flow through the skin and more heat to be lost to the environment. This is called vasodilation .
Detailed explanation-3: -Vasoconstriction warms the body by reducing heat loss from the blood vessels of the skin. Vasodilation cools the body by increasing heat loss from the blood vessels of the skin.