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#white matter #myelin sheath #signal speed #nerve impulse #saltatory conduction

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#axon sheath #nerve insulation #nerve impulse speed #saltatory conduction #nervous system

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#myelin sheath #myelinated axon #saltatory conduction #nerve insulation #nodes of ranvier #oligodendrocyte #schwann cell

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#myelinated axon #myelin sheath #saltatory conduction #nerve insulation #fast conduction