Exercise-induced asthma could impair pulmonary gas exchange by
A)reducing blood flow to the lung.
B)lowering the drive to breath.
C)causing bronchodilation.
D)increasing airway resistance.

Question

Quizplus · Accepted Answer

Exercise-induced asthma causes an increase in airway resistance due to inflammation, bronchoconstriction, and excessive production of mucus, which all impede the flow of air into and out of the lungs. This can impair pulmonary gas exchange as it reduces the amount of oxygen that can be taken in and the amount of carbon dioxide that can be eliminated. A decrease in blood flow or drive to breathe would not be the primary contributing factor to impaired gas exchange in exercise-induced asthma. Bronchodilation would actually help alleviate airway resistance and improve gas exchange.

Exercise-Induced Asthma Could Impair Pulmonary Gas Exchange by