Which one of the follwing pairs of structures distinguishes a nerve cell from other types of cell

Options

A. Flagellum and medullary sheath
B. Nucleus and mitochondria
C. Perikaryon and dendrites
D. Vacuoles and fibres

Answer

To answer the question "Which one of the following pairs of structures distinguishes a nerve cell from other types of cells?", we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Structures of a Nerve Cell**:
- A nerve cell, also known as a neuron, has a unique structure that includes a cell body, dendrites, and an axon.

2. **Understand the Components**:
- The **cell body** (also called the pericaryon) contains the nucleus and other organelles necessary for the cell's function.
- **Dendrites** are short, branched projections that receive signals from other neurons.
- The **axon** is a long, slender projection that transmits electrical impulses away from the cell body.

3. **Recognize Unique Features**:
- The combination of the cell body (pericaryon) and dendrites is unique to nerve cells. While other cells may have a cell body, the specific structure and function of dendrites are distinctive to neurons.

4. **Conclusion**:
- The pair of structures that distinguishes a nerve cell from other types of cells is the **pericaryon (cell body)** and **dendrites**.

### Final Answer:
The structures that distinguish a nerve cell from other types of cells are the **pericaryon (cell body)** and **dendrites**.

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