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Unformatted text preview: Glia Astrocytes Regulate intercellular space Restrict diffusion Some neurotransmitter uptake regulate interstitial [K+] have neurotransmitter receptors Myelinating Glia Oligodendroglia Wrap around axons to provide electrical insulation Regulate [K+] outside axon Leave naked Nodes of Ranvier Wrap a number of adjacent axons Schwann cells Wrap cell membrane around a peripheral nerve axon and only one Regulate [K+] Cover Node of Ranvier with cell membrane, but not myelin Ependymal cells - line ventricles and central canal, add to cerebro-spinal fluid Microglia - serve the purpose the macrophages do in the rest of the body....
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- Fall '08