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Neuroscience

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Moderate

Action Potential Conduction: Myelination

NEURO-7F@F3N

The conduction velocity of the action potential can be increased by increasing axonal diameter or by adding myelination to the axon. Myelination of the axon facilitates current flow down the inside of the axon.

Gaps between the myelin wrappings have increased concentrations of voltage-gated​ sodium channels. Regeneration of the action potential occurs at these gaps, as the voltage-gated sodium channels are opened by the current produced by an earlier action potential.