Neurons

ØA. Cell Body: The cell body (soma, perikaryon) is the synthetic and trophic center of the neuron. It can receive signals from axons of other neurons through synaptic contacts on its plasma membrane and relay them to its axon. The abundant free and RER-associated polyribosomes appear as clumps of basophilic material collectively called Nissl bodies.
ØB. Dendrites: These extensions of the soma are specialized to increase the surface available for incoming signals.
ØC. Axon: Each neuron has one axon, a complex cell process that carries impulses away from the soma. An axon is divisible into several regions. The axon billock, the part of the soma leading into the axon, differs from the rest of the perikaryon in that it lacks Nissl bodies.
ØD. Classification of Neurons