Which of the following medications relaxes muscle spasms in the bronchial tube?
A) expectorant
B) bronchodilator
C) antitussive
D) antihistamine
B
Explanation: A bronchodilator is used to relax bronchospasms. An expectorant is used to improve the ability to cough up mucus from the respiratory tract. An antitussive is used to relieve the urge to cough. An antihistamine blocks the histamines released during an allergy attack.
Health & Biomechanics
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