A disease that destroys the dorsal horn cells of the spinal cord is:

Options

A. Poliomyelitis
B. malaria
C. Filariasis
D. arthritis

Answer

To solve the question regarding which disease destroys the dorsal horn cells of the spinal cord, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Question**: The question asks for a disease that specifically destroys the dorsal horn cells of the spinal cord.

2. **Understand Dorsal Horn Cells**: Dorsal horn cells are located in the spinal cord and are involved in processing sensory information. They are critical for the functioning of the nervous system.

3. **Review the Options**: The options provided are:
- A. Poliomyelitis
- B. Malaria
- C. Filariasis
- D. Arthritis

4. **Analyze Each Option**:
- **A. Poliomyelitis**: This is an infectious disease caused by the poliovirus. It primarily affects the anterior horn cells of the spinal cord, leading to muscle weakness and paralysis. However, it can also impact the dorsal horn cells.
- **B. Malaria**: This is caused by Plasmodium parasites and primarily affects red blood cells, not the spinal cord.
- **C. Filariasis**: This is caused by parasitic worms and affects the lymphatic system, not the spinal cord.
- **D. Arthritis**: This is a joint disorder and does not affect the spinal cord directly.

5. **Determine the Correct Answer**: Since poliomyelitis is known to affect the spinal cord and can destroy dorsal horn cells, the correct answer is **A. Poliomyelitis**.

### Final Answer:
The disease that destroys the dorsal horn cells of the spinal cord is **A. Poliomyelitis**.