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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 and reason are false

D

If the assertion is false but reason is true

Text Solution

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The correct Answer is:
A
Histamine is a dervative of the amino acid histidine produced by damaged cells of vertebrates. When released, it has the effect of dilating capillaries and lowering blood pressure. Histamine is involved in allergic and inflammotory reactions.
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