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

Question

Quizplus · Accepted Answer

Bronchodilation involves the relaxation (decrease in contraction) of the smooth muscles surrounding the air passages, leading to an increase in their radius, allowing more air to pass through.

Bronchodilation of the Air Passages Involves the ____ of Their