Anticholinergics are used in treating asthma because they:
a. Inhibit the production of secretions by blocking the effects of the parasympathetic nervous system
b. Stimulate bronchodilation through beta2 effects
c. Cause sympathetic activity by binding at cholinergic receptor sites
d. Relax bronchial muscle due to an effect similar to the xanthine bronchodilators
a
Rationale: a. Correct.
b. Sympathomimetics stimulate bronchodilation by stimulating beta2 receptors.
c. Anticholinergics block the effects of acetylcholine inhibiting the bronchial secretions.
d. Not true.
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