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Vasodilation: Difference between revisions
>David Hedlund ===External links=== * [https://en.wikipedia.org/wiki/Vasodilation Vasodilation (Wikipedia)] |
>Josikins adding useful diagram |
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[[File:Vasodilation and vasoconstriction.png|300px|thumbnail|right|This diagram demonstrates comparative differences within vein structure during states of vasodilation, vasoconstriction, and normality.]] | |||
'''Vasodilation''' refers to the widening of blood vessels resulting from the relaxation of smooth muscle cells within the vessel walls (in particular in the large veins, large arteries, and smaller arterioles). In essence, the process is the opposite of [[vasoconstriction]], which is the narrowing of blood vessels. The primary function of vasodilation is to increase blood flow in the body to tissues that need it most. | '''Vasodilation''' refers to the widening of blood vessels resulting from the relaxation of smooth muscle cells within the vessel walls (in particular in the large veins, large arteries, and smaller arterioles). In essence, the process is the opposite of [[vasoconstriction]], which is the narrowing of blood vessels. The primary function of vasodilation is to increase blood flow in the body to tissues that need it most. | ||