Question

In emphysema, there is:

• A. Fluid in alveoli
• B. Infection of lungs
• C. Destruction of alveolar walls
• D. Narrowing of bronchi

Hint:

Emphysema is considered an irreversible condition. While treatments can manage symptoms, the destroyed alveolar walls do not regenerate.

Answer 1

The Correct Option is C

Step 1: Understanding the Concept:
Emphysema is a chronic, long-term respiratory disorder that affects the structures responsible for gas exchange. It is classified under Chronic Obstructive Pulmonary Disease (COPD).

Step 2: Detailed Explanation:
In the condition known as emphysema:
1. The alveolar walls (the delicate walls of the air sacs) are damaged or destroyed over time.
2. This destruction results in larger, fewer air sacs instead of many tiny ones, which drastically reduces the total surface area available for the exchange of oxygen and carbon dioxide.
3. Furthermore, the elastic fibers of the lungs are damaged, leading to air trapping and difficulty in exhaling.
A major known cause of this condition is chronic cigarette smoking.

Step 3: Final Answer:
Emphysema is characterized by the structural destruction of alveolar walls.