MICROANATOMY

Detailed explanation-1: -Vasoconstriction is the narrowing (constriction) of blood vessels by small muscles in their walls. When blood vessels constrict, blood flow is slowed or blocked. Vasoconstriction may be slight or severe. It may result from disease, drugs, or psychological conditions.

Detailed explanation-2: -Vasoconstriction may also be called vasospasm. It is a normal process that helps keep your body in healthy balance. Vasoconstriction may occur to: stabilize blood pressure or raise blood pressure. reduce loss of body heat in cold temperatures.

Detailed explanation-3: -Atherosclerosis, sometimes called “hardening of the arteries, ‘’ occurs when fat, cholesterol, and other substances build up in the walls of arteries. These deposits are called plaques. Over time, these plaques can narrow or completely block the arteries and cause problems throughout the body.

Detailed explanation-4: -Vasoconstriction is the narrowing of the blood vessels, which is the opposite of vasodilation. Causes of vasoconstriction include exposure to cold which leads to peripheral vasoconstriction; stress; smoking; medications like NSAIDs; and Raynaud phenomenon.

Detailed explanation-5: -When blood vessels get wider, that’s vasodilation. The opposite process, when blood vessels constrict and get narrower, is called vasoconstriction.