Why does bronchospasm occur during an asthma attack?

💡 Explanation

Bronchospasm happens because mast cells degranulate, releasing histamine and leukotrienes that cause bronchial smooth muscle constriction and inflammation. Therefore, option B is correct, rather than A where epinephrine causes relaxation, C involves acetylcholine release, and D is incorrect since albuterol activates beta-2 receptors.

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