The most important cause of emphysema is:
A) Cigarette smoking
B) Air pollution in the cities
C) Tuberculosis
D) AIDS
E) Asthma

Question

Quizplus · Accepted Answer

Cigarette smoking is the most important cause of emphysema. It damages the air sacs in the lungs and reduces their elasticity, making it difficult to exhale properly. Other risk factors for emphysema include air pollution, exposure to secondhand smoke, and a history of respiratory infections.

The Most Important Cause of Emphysema Is