Question

When vasoconstriction decreses the blood flow so why contraction increses the blood flow

Answer 1

Explanation:

Vasoconstriction reduces the volume or space inside affected bloodvessels. When blood vessel volume is lowered, blood flow is also reduced. At the same time, the resistance or force of blood flow is raised. This causes higher blood pressure.

Answer 2

Answer:

Vasoconstriction reduces the volume or space inside affected blood vessels. When blood vessel volume is lowered, blood flow is also reduced. At the same, time the resistance or force of blood flow is raised. This causes higher blood pressure.

in the Venous system, constriction increases blood pressure as it does in arteries; the increasing pressure helps to return blood to the heart. In addition, construction causes the vessel lumen to become more rounded, decreasing resistance and increasing blood flow.

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