Air filled in dead space is

Options

A. 150 C C
B. 350 C C
C. 500 C C
D. 1500 C C

Answer

### Step-by-Step Solution:

1. **Understanding Dead Space**:
- Dead space refers to the volume of air that is inhaled but does not participate in gas exchange in the lungs. This air remains in the respiratory tract (trachea, bronchi, and bronchioles) and does not reach the alveoli, where gas exchange occurs.

2. **Identifying the Volume of Dead Space**:
- The question asks for the volume of air that fills this dead space. It is important to know the standard volume of the respiratory dead space in a healthy adult.

3. **Standard Volume of Dead Space**:
- The typical volume of air that constitutes the dead space in an adult human is approximately 150 cc (cubic centimeters).

4. **Conclusion**:
- Therefore, the answer to the question "Air filled in dead space is" is **150 cc**.