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Astrocytes
In CNS, star-shaped, function in exchanges between capillaries & neurons, protect from harmful substances in the blood, control chemical environment of brain (maintain blood-brain barrier)
Microglia
In CNS, spider-like phagocytes, get rid of dead brain cells & bacteria, rare
Ependymal Cells
In CNS, line cavities of brain & spinal cord, cilia help circulate cerebrospinal fluid (CSF)
Oligodendrocytes
In CNS, wrap flat extensions around nerve fibers creating insulating myelin sheaths
Schwann cells
In PNS, form myelin sheaths around axons, outer surface of cells called the neurilemma
Satellite cells
In PNS, protective cushioning cells