A neuron is a specialized nerve cell that transmits electrical and chemical signals throughout the nervous system.

It consists of three main parts: the cell body (soma), dendrites, and an axon.

Neurons communicate through synapses using neurotransmitters like dopamine and serotonin.

The human brain contains approximately 86 billion neurons forming complex neural networks.

Neurons cannot regenerate like other cells, making them crucial for lifelong function.