Question

Name the pulmonary disease in which alveolar surface area involved in gas exchange is drastically reduced due to damage in the alveolar walls–

• A. Pleurisy
• B. Emphysema
• C. Pneumonia
• D. Asthma

Answer 1

The correct option is B Emphysema

Emphysema is a chronic disorder in which alveolar walls are damaged due to which respiratory surface is decreased. One of the major causes of this disease is cigarette smoking.
Pneumonia is an infection in which inflammation of the air sacs of the lungs occur. These air sacs are filled with pus or any fluid, thus causing difficulty in breathing.
Asthma is a condition in which airway becomes inflamed, narrow and swell, and produces extra mucus which makes breathing difficult.
Pleurisy is the inflammation of the tissues that line the lungs and chest cavity.

So, the correct answer is 'emphysema'.