Nissl's granules are present in

Options

A. Cyton & axon
B. Cyton only
C. Dendrites & Cyton
D. Dendrites only

Answer

**Step-by-Step Solution:**

1. **Understanding Nissl's Granules**: Nissl's granules, also known as Nissl bodies or Nissl substance, are granular structures found in neurons. They are primarily associated with the rough endoplasmic reticulum (RER) and ribosomes.

2. **Location of Nissl's Granules**: Nissl's granules are predominantly found in the cell body of neurons, which is also referred to as the soma or cytone. They can also be present in some dendrites.

3. **Function of Nissl's Granules**: The main function of Nissl's granules is to serve as a site for protein synthesis due to the presence of ribosomes and rough endoplasmic reticulum.

4. **Staining Method**: Nissl's granules can be visualized using a selective staining method developed by Sir Franz Nissl, which helps in localizing the cell body of neurons. This method is particularly useful as it highlights the presence of Nissl bodies in the soma and dendrites.

5. **Conclusion**: Based on the information gathered, Nissl's granules are present in the dendrites and the cytone (cell body) of neurons.

**Final Answer**: Nissl's granules are present in dendrites and cytone (cell body).

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