Why do cigarette smokers cough more than most people do?
A)The tar in cigarette smoke tends to make alveoli stick closed.Coughing opens them.
B)Coughing is the respiratory system's attempt to clear itself of the thick mucus that is produced in response to smoke exposure.
C)Cigarette smoking partially paralyzes the lungs; coughing exchanges the resultant "dead air."
D)Coughing stimulates blood flow to the lungs.

Question

Quizplus · Accepted Answer

Smoking irritates the respiratory passages, which leads to an increased production of mucus to protect the system from the toxins. The cough reflex is triggered to expel the excess mucus from the airways, making smokers cough more than nonsmokers.

Why Do Cigarette Smokers Cough More Than Most People Do