In a normal healthy individual, the volume of air remaining in the lungs even after forcible expiration is about

Options

A. 1200 ml
B. 500 ml
C. 3000ml
D. 2000ml

Answer

To solve the question regarding the volume of air remaining in the lungs after forcible expiration in a normal healthy individual, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Concept**: The question asks about the volume of air that remains in the lungs after a person has forcibly exhaled. This volume is known as the "residual volume."

2. **Define Residual Volume**: Residual volume (RV) is the amount of air that remains in the lungs after a maximal exhalation. It cannot be voluntarily expelled from the lungs.

3. **Know the Average Value**: The average value of residual volume in a normal healthy adult is typically between 1000 ml to 1200 ml.

4. **Analyze the Options**: The options given are:
- Option 1: 1200 ml
- Option 2: 500 ml
- Option 3: 3000 ml
- Option 4: 2000 ml

5. **Select the Correct Answer**: Since the average residual volume is around 1200 ml, the correct answer from the provided options is:
- **Option 1: 1200 ml**

### Final Answer:
The volume of air remaining in the lungs even after forcible expiration in a normal healthy individual is approximately **1200 ml**.