What is the basic unit of the nervous system?

The basic unit of the nervous system:

1. A neuron is the basic unit of the nervous system.
2. The signals between the brain and the other parts of the body comprising internal organs are mediated by the neurons which make up the nervous system.
3. In the brain of a human, approximately 100 billion neurons are present.
4. A neuron comprises a cell body that comprises the nucleus, and unique elongations known as axons.