Which of the following compounds relaxes the smooth muscles of the bronchial passages?
A)Theophylline
B)Acetaminophen
C)Phenytoin
D)Lithium
Answer: Theophylline
Which of the following compounds relaxes the smooth muscles of the bronchial passages?
A)Theophylline
B)Acetaminophen
C)Phenytoin
D)Lithium
Answer: Theophylline