What is the mechanism of action of racemic epinephrine?
A) Stimulates beta-adrenergic receptors,resulting in both relaxation of smooth muscles in the bronchial tree as well as a decrease in local airway edema with resultant decrease in the work of breathing
B) Stimulates alpha-adrenergic receptors,resulting in both relaxation of smooth muscles in the bronchial tree as well as a decrease in local airway edema with resultant decrease in the work of breathing
C) Stimulates both alpha- and beta-adrenergic receptors,resulting in both relaxation of smooth muscles in the bronchial tree as well as a decrease in local airway edema with resultant decrease in the work of breathing
D) Stimulates both alpha- and beta-adrenergic receptors,resulting in both contraction of smooth muscles in the bronchial tree as well as a increase in local airway edema with resultant decrease in the work of breathing
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