Tidal volume in human being is

Options

A. 500 mL
B. 800 mL
C. 1000 mL
D. 1200 mL

Answer

### Step-by-Step Solution

1. **Understanding Tidal Volume**: Tidal volume refers to the amount of air that is inhaled or exhaled during a normal breath. It is a key term in respiratory physiology.

2. **Definition**: Tidal volume is defined as the total volume of air moved in or out of the lungs during a single respiratory cycle (normal breathing, not forced).

3. **Normal Values**: For a young, healthy adult human being, the typical tidal volume is approximately 500 ml per breath. This value can vary slightly between individuals, with males generally having a tidal volume around 500 ml and females around 400 ml.

4. **Evaluating the Options**: The question provides four options:
- 500 ml
- 800 ml
- 1000 ml
- 1200 ml

5. **Correct Answer**: Based on the standard value of tidal volume for a healthy adult, the correct answer is 500 ml.

6. **Conclusion**: Therefore, the tidal volume in human beings is 500 ml.