Glial cells comprise the non-sensory parts of the central nervous system as well as the peripheral nervous system. Glial cells, also known as neuroglia, constitute a significant portion of the mammalian nervous system and can be viewed simply as a matrix of neural cells. Despite being the "Nervenkitt" or "glue of the nerves", they aptly serve multiple roles, including neuron repair, myelin sheath formation, and cerebrospinal fluid circulation.
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