Neuroglia - protective function by engulfing microorganisms...

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Neuroglia Neuroglia (glia) are cells that support  and protect neurons. The following four  neuroglia are found in the CNS: Astrocytes  have numerous  processes that give the cell a  star-shaped appearance.  Astrocytes maintain the ion  balance around neurons and  control the exchange of materials  between blood vessels and  neurons. Oligodendrocytes  have fewer  processes than astrocytes. They  wrap these cytoplasmic 
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processes around neurons to  create an insulating barrier called  a myelin sheath. Microglia  are phagocytic  macrophages that provide a 
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Unformatted text preview: protective function by engulfing microorganisms and cellular debris. • Ependymal cells line the fluid-filled cavities of the brain and spinal cord. Many are ciliated. Two kinds of neuroglia are found in PNS: • Schwann cells (neurolemmocytes) wrap around axons to produce an insulating myelin sheath. Schwann cells provide the same function in the PNS as oligodendrocytes provide in the CNS. • Satellite cells are located in ganglia, where they surround the cell bodies of neurons....
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This note was uploaded on 12/04/2011 for the course ANTHRO 2000 taught by Professor Monicaoyola during the Fall '10 term at Broward College.

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Neuroglia - protective function by engulfing microorganisms...

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