Which of the following disorders results in increased residual volume?

Options

A. Emphysema
B. Pneumonia
C. Coryza
D. Tuberculosis

Answer

To determine which disorder results in increased residual volume, we need to understand what residual volume is and how different respiratory disorders affect lung function.

### Step-by-Step Solution:

1. **Understand Residual Volume**:
- Residual volume (RV) is the amount of air that remains in the lungs after a person has exhaled forcefully. It is important for maintaining gas exchange and preventing lung collapse.

2. **Identify the Disorders**:
- The options given are:
- A) M5 semia
- B) Pneumonia
- C) Chorizo
- D) Tuberculosis

3. **Analyze Each Disorder**:
- **M5 semia**: This disorder affects the alveolar walls, leading to an increase in residual volume due to impaired lung function and reduced ability to expel air completely.
- **Pneumonia**: This condition involves inflammation of the lungs, which may lead to fluid accumulation. It typically does not increase residual volume significantly.
- **Chorizo**: This appears to be a typographical error or misrepresentation of a disorder. Assuming it refers to a respiratory condition, it generally does not lead to increased residual volume.
- **Tuberculosis**: This is a chronic infection that can damage lung tissue but does not typically result in increased residual volume.

4. **Conclusion**:
- Based on the analysis, **M5 semia** is the disorder that results in increased residual volume.

### Final Answer:
The disorder that results in increased residual volume is **M5 semia**.