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Glial cells:
1) What do they do?
2)Types?
- 1) Are half of the cells in the CNS that provide support to neurons. They divide throughout life, which can lead to tumors.
- 2)Oligodendrocyte, Astrocyte, Microglia, Ependymal Cells
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Oligodendrocyte
Provide myelin sheath for CNS neurons
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Astrocyte
- Regulates composition of extracellular fluid in CNS by removing K+ and neurotransmitters around synapses.
- Stimulates the formation of blood/brain barrier
- Provides glucose
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Microglia
- Macrophage like cells
- Involved in synapse remodeling, plasticity
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Ependymal Cells
Line fluid-filled cavaties with in brain & spinal cord regulate production of CF
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Schwann Cells
Like oligodendrocytes, except part of the PNS
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