Pharmacology · single question
Mechanism of action of albuterol?
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Correct answer: A. Beta-2 adrenergic agonist
- A. Correct. Albuterol is a selective beta-2 agonist that relaxes bronchial smooth muscle (bronchodilation) in asthma.
- B. Incorrect. Beta-1 stimulation acts on the heart, not the primary bronchodilatory target.
- C. Incorrect. Anticholinergics (e.g., ipratropium) bronchodilate by a different mechanism.
- D. Incorrect. A beta blocker would WORSEN bronchospasm, the opposite of albuterol.