Week 9 Reflection_ Nervous system.docx

Week 9 Reflection_ Nervous system.docx - Week 9 Reflection...

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Week 9 Reflection: Nervous System - Neuroglia Explain the function of these neuroglial cells (be sure to include whether they are in the CNS or PNS): Astrocytes Microglia Oligodendrocytes Schwann cells WHAT ARE NEUROGLIA? Neuroglia, also called glial cells, are cells of the nervous system. They compose a voluminous support system that is essential to the proper operation of nervous tissue and the nervous system. Unlike neurons, glial cells do not have axons, dendrites or conduct nerve impulses. Neuroglia is typically smaller than neurons and is about three times more numerous in the nervous system. Glia performs a plethora of functions in the nervous system. These functions include providing support for the brain, assisting in nervous system repair and maintenance, assisting in the development of the nervous system, insulating neurons, and providing metabolic functions for neurons. Astrocytes (CNS) Astrocytes are found in the brain and spinal cord. They are star-shaped neuroglia that resides in
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