Question

Alveoli become enlarged and damaged with reduced surface area in heavy smokers. The condition is called _______.

• A. Silicosis
• B. Emphysema
• C. Asthma
• D. Bronchitis

Answer 1

Answer: (B)

Emphysema

• In emphysema, the inner walls of the lungs air sacs (alveoli) are damaged, causing them to eventually rupture. This creates one larger air space instead of many small ones and reduces the surface area available for gas exchange, causing shortness of breath. Emphysema mainly caused due to heavy smoking.
• Silicosis is a respiratory disorder caused by breathing tiny bits of silica.
• In asthma, there is an excess amount of mucus is released on the walls of the respiratory tract. It is caused due to allergic reactions.
• Bronchitis is the inflammation of the bronchi.

So, the correct option is B.