Units of nervous system are

Options

A. Cytons
B. Axons
C. Neurons
D. Dendrites.

Answer

### Step-by-Step Text Solution:

1. **Understanding the Components of the Nervous System**: The nervous system is composed of various structures, but the fundamental unit is crucial to identify.

2. **Analyzing the Options**:
- **Cytons**: This term refers to the cell body of a neuron, which contains the nucleus and cytoplasm. While important, cytons are not the basic unit of the nervous system.
- **Axon**: An axon is a long, slender projection of a neuron that transmits electrical impulses away from the cell body. However, it is not the basic unit itself, as it is part of a neuron.
- **Neurons**: Neurons are specialized cells that serve as the basic units of the nervous system. They are responsible for transmitting information throughout the body, connecting with other neurons, muscles, or glands.
- **Dendrites**: These are branched extensions of a neuron that receive signals from other neurons. While they play a vital role in neuron function, they are not the basic unit of the nervous system.

3. **Conclusion**: After analyzing all the options, it is clear that the basic unit of the nervous system is the neuron.

### Final Answer:
The units of the nervous system are **neurons**.

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