Expiratory reserve volume of a healthy person is

Options

A. 1000mL to 1100mL
B. 6000mL to 8000mL
C. 2500mL to 3000mL
D. 2100mL to 2200mL

Answer

To determine the expiratory reserve volume (ERV) of a healthy person, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Definition of Expiratory Reserve Volume (ERV)**:
- ERV is the amount of air that can be forcefully exhaled after the expiration of a normal tidal volume. It represents the additional air that can be expelled from the lungs beyond the normal breath.

2. **Identify the Normal Range for ERV**:
- The expiratory reserve volume varies between individuals but generally falls within a specific range for healthy adults.

3. **Differentiate Between Males and Females**:
- In healthy individuals, the ERV is slightly different for males and females.
- For females, the ERV is approximately 1000 mL (or 1 liter).
- For males, the ERV is approximately 1100 mL (or 1.1 liters).

4. **Conclude the Range**:
- Therefore, the expiratory reserve volume for a healthy person ranges from about 1000 mL to 1100 mL.

5. **Final Answer**:
- The expiratory reserve volume of a healthy person is between 1000 mL and 1100 mL.