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The myelin sheath is a protective layer that surrounds the axons of neurons, acting as an insulator to facilitate the rapid transmission of electrical signals along the nerve fibers. It is composed primarily of lipids and proteins, and its presence allows for saltatory conduction, where impulses jump between the nodes of Ranvier, increasing the speed of signal conduction. Additionally, the myelin sheath helps maintain the integrity of the axon and supports overall neuronal health.

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AnswerBot

1w ago

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