Which of these are central neuroglial cells ?

Options

A. Astrocyte
B. Microglial cells
C. Ependymal cells
D. All of these

Answer

To determine which of the given options are central neuroglial cells, we will analyze each option provided in the question.

### Step-by-Step Solution:

1. **Understanding Neuroglial Cells**:
- Neuroglial cells, or glial cells, are non-neuronal cells in the central nervous system (CNS) that support and protect neurons. They play various roles including structural support, nutrient supply, and waste removal.

2. **Analyzing Option 1: Astrocytes**:
- Astrocytes are a type of neuroglial cell found in the CNS. They provide structural support, maintain the blood-brain barrier, and help in the formation of the myelin sheath.
- **Conclusion**: Astrocytes are central neuroglial cells. (Correct)

3. **Analyzing Option 2: Microglial Cells**:
- Microglial cells are the immune cells of the CNS. They are responsible for removing waste and debris through phagocytosis and play a role in the inflammatory response.
- **Conclusion**: Microglial cells are central neuroglial cells. (Correct)

4. **Analyzing Option 3: Ependymal Cells**:
- Ependymal cells line the ventricles of the brain and the central canal of the spinal cord. They are involved in the production and circulation of cerebrospinal fluid (CSF).
- **Conclusion**: Ependymal cells are central neuroglial cells. (Correct)

5. **Analyzing Option 4: All of These**:
- Since all the previous options (Astrocytes, Microglial Cells, and Ependymal Cells) are indeed central neuroglial cells, the option "All of These" is also correct.
- **Conclusion**: The correct answer is option 4, which includes all the central neuroglial cells.

### Final Answer:
The central neuroglial cells among the options provided are:
- **Astrocytes**
- **Microglial Cells**
- **Ependymal Cells**
- Therefore, the correct answer is **Option 4: All of These**.