Question

what is the difference between vasoconstriction and vasodilation​

Answer 1

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here is your answer

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in cold weather the outside temperature is low.

so the blood vessels gets narrowed.

this is known as vasoconstriction .

this reduces the blood supply to the skin .

in hot weather the outside temperature is high and when a person is engaged in physical work more amount of heat is produced within the body .

so the blood vessels dilate.

this is known as vasodilation

in this case more blood is carried ..

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Answer 2

vasodialation is narrowing of blood vessles and vasoconstriction is constriction of blood vessels