Nissl granules occur in

Options

A. Bone cells
B. Mast cells
C. Nerve cells
D. Chondrocytes .

Answer

**Step-by-Step Text Solution:**

1. **Understanding Nissl Granules**: Nissl granules, also known as Nissl bodies or tigroid substance, are large granular bodies found in certain types of cells.

2. **Identifying the Cell Type**: The question asks where Nissl granules occur. The options provided are:
- Bone cells
- Mast cells
- Nerve cells
- Chondrocytes

3. **Recognizing the Function of Nissl Granules**: Nissl granules are primarily associated with neurons, which are the functional units of the nervous system. They play a crucial role in protein synthesis.

4. **Analyzing the Options**:
- **Bone Cells**: These are involved in the structure and function of bones and do not contain Nissl granules.
- **Mast Cells**: These are found in mucosal and epithelial tissues and are involved in immune responses, not related to Nissl granules.
- **Nerve Cells**: These are neurons, which contain Nissl granules as they are rich in rough endoplasmic reticulum (RER) and free ribosomes, essential for synthesizing proteins.
- **Chondrocytes**: These are cartilage cells and do not contain Nissl granules.

5. **Conclusion**: Based on the analysis, the correct answer is that Nissl granules occur in **nerve cells**.

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