Question

Assertion (A): Histamine is related with allergic and inflammatory reactions.

Reason (R): Histamine is a vasodilator.

Options

• Both assertion (A) and reason (R) are true, and reason is the correct explanation of assertion.

• Both assertion (A) and reason (R) are true, but reason is not the correct explanation of assertion.

• Assertion (A) is true but reason (R) is false.

• Both assertion (A) and reason (R) are false.

Answer 1

Both assertion (A) and reason (R) are true, and reason (R) is the correct explanation of assertion (A).

Explanation:

Histamine promotes vasodilation and contributes to the redness, itching and other inflammatory effects of allergic reactions.