Target organ of Mycobacterium leprae

Options

A. Medullary sheath
B. Presynaptic nodes
C. motor end plates
D. Schwann cells

Answer

To answer the question about the target organ of Mycobacterium leprae, we can follow these steps:

### Step 1: Identify the Bacteria
Mycobacterium leprae is the bacterium that causes leprosy, also known as Hansen's disease.

### Step 2: Understand the Disease
Leprosy primarily affects the skin, peripheral nerves, mucous membranes, and eyes. It is important to know which specific cells or tissues are targeted by the bacteria.

### Step 3: Analyze the Options
The options provided are:
1. Medullary sheath
2. Presynaptic nodes
3. Motor plates
4. Schwann cells

### Step 4: Determine the Target Organ
Among the options, Schwann cells are the cells that mycobacterium leprae primarily targets. Schwann cells are responsible for the formation of the myelin sheath around peripheral nerves. The infection leads to damage in these cells, which affects the peripheral nervous system.

### Step 5: Conclusion
The correct answer to the question is the fourth option: Schwann cells.

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