The neurons are the cells specialized to carry on the rapid communications required for coordinated function both within the organism and between the organism and its environment.
They are highly asymmetric cells, with processes that often extend a considerable distance from the cell body.
The exploitation of two characteristics of protoplasm - irritability and conductivity – permits these cells to react to various stimuli in a fraction of second and to transmit the excitation to another location.
In addition some nerve cells possess a secretary capability that enables integration of function through localized and selective effects.
A neurons’ cell body holds its nucleus and most organelles. Cytoplasmic extensions from the cell body allow neurons to detect stimuli, recover signals and signal other cells. Information flows from sensory neurons, to interneurons, to motor neurons.
Neurons
