Question

Which type of lung disorder decreases pulmonary compliance and thereby decreases vital capacity?

Answer 1

In restrictive lung diseases like fibrosis, the compliance of the lung decreases, leading to a decrease in vital capacity.

Step-by-step explanation:

In restrictive lung diseases like fibrosis, the compliance of the lung decreases. This means that the lung tissue becomes less elastic and stiff, making it harder for the lungs to expand and contract. As a result, vital capacity, which is the maximum amount of air a person can exhale after taking a deep breath, is decreased. Examples of restrictive lung diseases include respiratory distress syndrome and pulmonary fibrosis. In these diseases, the airways are less compliant and collapse upon exhalation, trapping air in the lungs.

Step-by-step explanation:

1. In restrictive lung diseases, the compliance of the lung decreases.
2. The lung tissue becomes less elastic and stiff.
3. This makes it harder for the lungs to expand and contract.
4. As a result, vital capacity is decreased.
5. Examples of restrictive lung diseases include respiratory distress syndrome and pulmonary fibrosis.
6. In these diseases, the airways are less compliant and collapse upon exhalation, trapping air in the lungs.