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STD 12 - 7. human health and disease — NEET STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceNEETSTD 12 - 7. human health and disease4 Marks
Question
Assertion: Histamine is related with allergic and inflammatory reactions.

Reason: Histamine is a vasodilator.

✓

Answer

a
Histamine is produced by mast cells in response to the allergy and inflammatory reaction. When histamine is released from mast cells, it causes vasodilation and an increase in permeability of the blood vessel walls. These effects, in turn cause the common symptoms of allergy including a running nose and watering eyes.

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