Neurons come in many forms, shapes and sizes, but it is helpful to think of a neuron like a tree. A neuron has three main parts, the cell body, an axon, and the dendrites. The tree trunk (cell body) stores genetic information (DNA) in a compartment called the nucleus. The cell body also contains the chemical machinery to produce the neurotransmitters that the neuron uses to communicate with each other.
The tree's branches (dendrite, the word déndron comes from the Greek language and actually means "tree") are the parts of a neuron that receive signals. Dendrites were once thought to be like antennae, just receiving signals from other neurons, but, as I explain, they can do more than this.
The tree root (axon) is the structure used by a neuron to connect with and talk to another neuron. An axon carries information similar to a cable that carries electricity. When one neuron wants to share a message with another, it sends an electrical impulse, called an action potential, down its axon until it reaches the axon terminal, at the end of the axon.

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