Pharmacologic control of the airway is mediated by receptors found on which of the following structures? 1. Smooth muscle 2. Secretory cells 3. Blood vessels 4. Alveolar epithelium
a. 1 and 3 only
b. 1, 2, and 3 only
c. 3 and 4 only
d. 2, 3, and 4 only
ANS: B
Pharmacologic control of the airway is mediated by receptors found on airway smooth muscle, secretory cells, bronchial epithelium, and pulmonary and bronchial blood vessels.
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