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Assertion . Histamine is involved in all...

Assertion . Histamine is involved in allergic and inflammatory reactions . Reason. Histamine is vasodilator

A

If both the assertion and the reason are true and the reason is a correct explanation of the assertion

B

If both the assertion and reason are true but the reason is not a correct explanation of the assertion

C

If the assertion is true but the reason is false

D

If both the assertion and reason are false

Text Solution

Verified by Experts

The correct Answer is:
A
Histamine is secreted by basophils and mast cells that cause allergic and inflammatory reaction. It functions as vasodilator that occurs when the muscular walls that surround the blood vessels are relaxed caused the blood vessel to widen.
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