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 options are central neuroglial cells, we can follow these steps:

### Step-by-Step Solution:

1. **Understand Neuroglial Cells**: Neuroglial cells, also known as glial cells, are supportive cells in the nervous system. They play crucial roles in supporting, protecting, and nourishing neurons.

2. **Identify Types of Neuroglial Cells**: There are four main types of neuroglial cells:
- **Astrocytes**: These cells provide structural support and regulate the blood-brain barrier.
- **Oligodendrocytes**: They are responsible for forming the myelin sheath around neurons in the central nervous system (CNS).
- **Microglia**: These are the immune cells of the CNS, providing defense against pathogens and clearing debris.
- **Ependymal Cells**: These cells line the ventricles of the brain and the central canal of the spinal cord, involved in the production and circulation of cerebrospinal fluid.

3. **Determine Which Cells Are Central Neuroglial Cells**:
- **Astrocytes**: Central neuroglial cell.
- **Oligodendrocytes**: Central neuroglial cell.
- **Microglia**: Central neuroglial cell.
- **Ependymal Cells**: Central neuroglial cell.

4. **Conclusion**: All of the mentioned cells (astrocytes, oligodendrocytes, microglia, and ependymal cells) are central neuroglial cells.

### Final Answer:
All of the options provided (A. astrocyte, B. microglial cell, C. ependymal cell) are central neuroglial cells.

---