Multiple Choice
Smokers cough frequently because
A) tar fills numerous alveoli.
B) a histamine response to the smoke narrows the airway.
C) cilia that typically eject mucus are paralyzed by the smoke.
D) coughing assists in release of surfactant, which is inhibited by smoking.
E) All of the above
Correct Answer:
Verified
Correct Answer:
Verified
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