The maximum amount of air that a person can expel from lungs after first filling the lungs to their maximum extent is

Options

A. Inspiratory reserve volume
B. Expiratory reserve volume
C. Inspiratory capacity
D. Vital capacity

Answer

To solve the question regarding the maximum amount of air that a person can expel from the lungs after filling them to their maximum extent, we need to understand the different respiratory volumes and capacities. Here’s a step-by-step breakdown:

### Step 1: Understand the Terminology
- **Inspiratory Reserve Volume (IRV)**: This is the additional volume of air that can be inhaled after a normal inhalation. It is not the answer to our question.

- **Expiratory Reserve Volume (ERV)**: This is the additional volume of air that can be exhaled after a normal exhalation. Again, this does not answer the question.

- **Inspiratory Capacity (IC)**: This is the total volume of air a person can inhale after a normal expiration. This is not the maximum air expelled.

- **Vital Capacity (VC)**: This is the maximum volume of air that can be exhaled after a maximum inhalation. This is the relevant term for our question.

### Step 2: Identify the Correct Answer
From the definitions above, we can see that the maximum amount of air that a person can expel from the lungs after filling them to their maximum extent is represented by **Vital Capacity (VC)**.

### Conclusion
The correct answer to the question is **Vital Capacity**.

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