Question

The maximum volume of air that can be expelled from the lungs after taking the deepest possible breath is called as

• A. Vital capacity
• B. Tidal volume
• C. Ventilation rate
• D. Respiratory rate

Hint:

Vital Capacity = Sum of IRV + TV + ERV. It measures the "vital" strength of your lungs.

Answer 1

The Correct Option is A

Step 1: Concept
Lung volumes and capacities are measurements of the amount of air the lungs can hold at different phases of respiration.

Step 2: Meaning
A capacity is the sum of two or more lung volumes.

Step 3: Analysis
Tidal volume is air moved in a normal breath. Respiratory rate is breaths per minute. Vital capacity represents the total amount of exchangeable air, calculated after a maximal inhalation followed by a maximal exhalation.

Step 4: Conclusion
Therefore, the maximum air expelled after a deep breath is defined as the vital capacity.

Final Answer: (A)