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{{neuron map}}A '''neuron''' or nerve [[cell ]] is the functional cellular unit of the [[nervous system]], ; along with the [[glianeuroglial]] cell it makes up all [[nervous tissue]]. Neurons are cells that can propagate an electrical signal across the cellular membrane. The cell is divided into three major parts : the [[dendrites]], [[soma]] or cell body, and the [[axon]]. The archetypal neuron receives input at the tips of the dendrites, integrates that information at the cell body and outputs a signal an electrical impulse along the axon. However, there is significant variation in cellular architecture and function across the animal kingdom.