Astrocyte:Astrocytes are star-shaped glial cells that provide structural support, regulate the chemical environment (especially by controlling neurotransmitter and ion concentrations), and maintain the blood-brain barrier.
Oligodendrocyte: An oligodendrocyte is responsible for forming the myelin sheath around axons within the Central Nervous System (CNS), which consists of the brain and spinal cord.
Schwann Cell: A Schwann cell is the glial cell that forms the myelin sheath around a single axon in the Peripheral Nervous System (PNS), which includes all nerves outside the brain and spinal cord.
Microglia:Microglia are the immune cells of the CNS, acting as phagocytes that constantly monitor the brain tissue, remove pathogens and cellular debris, and help manage inflammation.
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