Bio221NervousSystemandNervousTissue

Livealongtimeyourentirelifetimeiftheystayhealthy

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Unformatted text preview: infections & dead tissue c. ependymal cells ­ lining of the cerebrospinal cavities; cilia move the fluid around d. oligodendrocytes ­ form myelin sheaths to insulate nerves 2. supporting cells in the PNS a. satellite cells ­ control the chemical environment b. Schwann cells ­ form myelin sheaths around axons B. neurons (nerve cells) 1. live a long time (your entire lifetime, if they stay healthy) 2. they cannot reproduce (they're amitotic); once they're gone, they're gone 3. high metabolic rate; so they use a lot of glucose & oxygen 4. ther...
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