Question

What is the volume of air remaining in the lungs after forceful expiration called?

• A. Tidal Volume
• B. Vital Capacity
• C. Residual Volume (RV)
• D. Inspiratory Capacity

Hint:

Important lung volumes: Tidal Volume (TV) – air inhaled or exhaled during normal breathing. Vital Capacity (VC) – maximum air expelled after maximum inhalation. Residual Volume (RV) – air remaining in lungs after forceful expiration.

Answer 1

The Correct Option is C

Concept: Lung volumes refer to different quantities of air associated with the respiratory cycle. These volumes help in understanding respiratory physiology and the functioning of the lungs.

Step 1: Understanding Residual Volume. Residual Volume (RV) is the volume of air that remains in the lungs even after a forceful expiration. This air cannot be expelled from the lungs.

Step 2: Importance of Residual Volume.
• It prevents the lungs from collapsing.
• It allows continuous gas exchange between breaths.
• It maintains the structure and function of alveoli.

Step 3: Conclusion. Therefore, the air remaining in the lungs after forceful expiration is called Residual Volume (RV).