A neuron consists of three main parts. These are
The cell body, containing the nucleus, is the control center of the cell and the site of its metabolic activity. Dendrites, which extend from this cell body, receive signals from other cells in the form of neurotransmitters. This triggers an electrical impulse, which travels down the axon to the next cell on the route of the signal. At the end of the axon, neurotransmitters are again released, cross the synapse, and act upon the following cell.