Bronchodilation of the air passages involves the ____ of their smooth muscle and the ____ of their radius.
A)decrease; decrease
B)decrease; increase
C)increase; decrease
D)increase; increase
E)None of the above

Question

Quizplus · Accepted Answer

Bronchodilation involves the relaxation (decrease in contraction) of the smooth muscle, leading to an increase in the radius of the air passages.

Bronchodilation of the Air Passages Involves the ____ of Their