Question:
Assertion (A): Mast cells secrete serotonin.
Reason (R): Vasodilators cause inflammation in response to infection.
Assertion (A): Mast cells secrete serotonin.
Reason (R): Vasodilators cause inflammation in response to infection.
Reason (R): Vasodilators cause inflammation in response to infection.
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Mast cells release various substances like serotonin and histamine, but vasodilation occurs due to other mechanisms such as the action of prostaglandins and bradykinin.
Updated On: Mar 18, 2026
- Both A and R are correct and R is the correct explanation of A.
- Both A and R are correct but R is not the correct explanation of A.
- A is correct but R is incorrect.
- A is incorrect but R is correct.
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The Correct Option is B
Solution and Explanation
Mast cells do indeed secrete serotonin, which is involved in inflammatory responses. However, the reason that vasodilators cause inflammation is not directly linked to the secretion of serotonin by mast cells, thus the reason does not fully explain the assertion.
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