Human Health and Disease — BIOLOGY STD 12 Science — Question
Maharashtra BoardEnglish MediumSTD 12 ScienceBIOLOGYHuman Health and Disease3 Marks
Question
Cold medications may contain antihistamines. What effect does this medication have on cold symptoms?
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Answer
Histamine causes capillaries to dilate and become more permeable, resulting in the so called 'runny' nose and stuffiness that often accompany a cold. It also constricts air passage-ways, causing some difficulty in breathing. Antihistamines counteracts these effects of histamine.
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