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The insulation space that protects nerve fibers.
Think of your never fibers like tiny astronauts floating in the wide-open universe of your body. Like astronauts, never fibers have an important job to do, so they need some protection. That’s where the myelin sheath comes in—it’s the insulating space suit that protects your nerve fibers and helps speed up the transmission of electrical impulses from your brain to the rest of your body.
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