This chapter focuses on the two major cell types that form the nervous system: supporting cells and conducting cells. The supporting cells consist of the glia, epedenymal cells lining cells the ventricles, the meningeal coverings of the brain, the circulating blood cells, and the endothelial lining cells of the blood vessels. The conducting cells, or neurons, form the circuitry within the brain and spinal cord and their axons can be as short as a few microns or as long as one meter. The supporting cells are constantly being replaced, but the majority of conducting cells/neurons, once formed, remain throughout our lives.
KeywordsSchwann Cell Satellite Cell Peripheral Nervous System Rough Endoplasmic Reticulum Myelin Sheath
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