Psychology / Psych 0147 · Atom · ~20 seconds
The Myelin Sheath
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The myelin sheath is a fatty coating on the axon that speeds signal transmission and insulates it from neighboring axons.
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A myelinated axon carries a signal to the foot in milliseconds, far faster than an unmyelinated axon of the same width.
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Myelin is not the signal's carrier. It is insulation, and its loss slows a signal that is otherwise intact.
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