A bronchodilator is a medication that causes the bronchi to:
a. narrow
b. secrete mucus
c. widen
d. tighten
c
Explanation:
a. narrow: bronchi do not narrow because of a bronchodilator
b. secrete mucus: bronchi do not secrete mucus because of a bronchodilator
c. widen: correct
d. tighten: bronchi do not tighten because of a bronchodilator
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