After deep inspiration, capacity of maximum expiration of lung is called `:-`

Options

A. vital capacity
B. total lung capacity
C. inspiratory capacity
D. functional residual capacity

Answer

To solve the question "After deep inspiration, the capacity of maximum expiration of the lung is called:", we need to analyze the definitions of the options provided and determine which one fits the description.

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks for the lung capacity that refers to the maximum expiration after a deep inspiration.

2. **Defining the Options**:
- **Vital Capacity**: This is the maximum volume of air that can be expelled from the lungs after maximum inhalation (deep inspiration). It includes the inspiratory reserve volume, expiratory reserve volume, and tidal volume.
- **Total Lung Capacity**: This is the total volume of air in the lungs after maximum effort of inspiration. It is not specifically related to expiration.
- **Inspiratory Capacity**: This is the volume of air that can be inspired after a normal expiration. It does not relate to maximum expiration after deep inspiration.
- **Functional Residual Capacity**: This is the volume of air remaining in the lungs after normal expiration. It does not pertain to maximum expiration after deep inspiration.

3. **Analyzing the Definitions**:
- The vital capacity is the only option that specifically refers to the maximum volume of air expelled from the lungs after deep inspiration. This matches the requirement of the question.
- The other options either refer to total lung volume or the volume remaining after expiration, which do not fit the criteria of maximum expiration after deep inspiration.

4. **Conclusion**: Based on the definitions and analysis, the correct answer is **Vital Capacity**.

### Final Answer:
The capacity of maximum expiration of the lung after deep inspiration is called **Vital Capacity**.