Question

__________ protects lungs.

• A. Pleural membrane
• B. Pleural fluid
• C. Both (A) and (B)
• D. Neither (A) nor (B)

Answer 1

The correct option is C

Both (A) and (B)

The correct option is C.

Explanation of the correct option:

1. The lungs are covered by two membranous coverings called pleural membranes.
2. The space between the membranes is filled with a viscous fluid called pleural fluid.
3. Both the pleural membrane and the pleural fluid protect the lungs from any external injuries and shocks.
4. Pleural fluid also reduces friction between membranes during inspiration and expiration.

Final Answer:

Pleural membrane and pleural fluid protect the lungs.