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CNS Neuroglial Cells

CNS Neuroglial Cells. Greatly outnumber neurons in the CNS (think worker ants vs. Queen ant) Microglial cells Scattered throughout CNS Support neurons and phagocytize bacterial cells and cellular debris Oligodendrocytes Occur in rows along nerve fibers

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CNS Neuroglial Cells

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  1. CNS Neuroglial Cells • Greatly outnumber neurons in the CNS (think worker ants vs. Queen ant) • Microglial cells • Scattered throughout CNS • Support neurons and phagocytize bacterial cells and cellular debris • Oligodendrocytes • Occur in rows along nerve fibers • Provide layers of myelin around axons within brain and spinal cord

  2. CNS Neuroglial Cells, continued…. • Astrocytes • Found between neurons and blood vessels • Provide structural support, help regulate nutrients and ions in tissues • Form scar tissue to fill spaces after CNS injuries • Ependymal cells • Form epithelial-like membrane in parts of the brain (choroid plexuses) • Form inner linings that enclose ventricles in the brain and central canal in the spinal cord

  3. CNS Neuroglial Cells

  4. PNS Neuroglial cells • Schwann cells: form myelin sheath around axons

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