Vasodilation is the widening of the blood vessels, a process that happens naturally in response to various conditions to ensure blood flow is directed to where it is needed. Vasodilation can be useful in treating some medical conditions.
Vasodilation occurs when the smooth muscle in the walls of the arteries and major veins relaxes. This enlarges the width or diameter of the vessel and allows more blood to flow through; as a result, the amount of oxygen and nutrients reaching the tissues and organs increases.
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