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The respiratory system is vital for the exchange of oxygen and carbon dioxide, and any disorder affecting it can significantly impact overall health. One common disorder is asthma, a chronic inflammatory condition of the airways. In asthma, the bronchial tubes become hypersensitive to various triggers such as allergens, pollutants, cold air, or respiratory infections. This hypersensitivity causes the airways to narrow due to muscle constriction, swelling of the _________ ______ _____ ______ ____ __________ ____ _____ ____ __________.
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