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Va Ve Vi
Vac Vas
Vasoc Vasod

Vasoconstriction

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Vasoconstriction is the narrowing of blood vessels, which results in a decrease in blood flow to certain areas of the body. This process can occur naturally in response to certain stimuli, such as cold temperatures or emotional stress, and can also be induced by...

Vasodilation

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Vasodilation refers to the widening or dilation of blood vessels. This physiological process occurs when the smooth muscles in the vessel walls, particularly in the large veins, large arteries, and smaller arterioles, relax. Vasodilation decreases blood pressure as it...