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Explain the terms "vasodilation" and "vasconstriction".How do these processes contribute in temperature regulation of the body? Concise Biology Class IX By H.S. Vishnoi CHAPTER 15-SKIN |
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Answer» Vasodilation refers to the widening of blood VESSELS. It RESULTS from relaxation of smooth muscle cells within the vessel walls, in particular in the large veins large arteries, and smaller arterioles. The process is the opposite of VASOCONSTRICTION, which is the narrowing of blood vessels. |
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