Location: Myelinated axon of a nerve Accordingly, how does myelination affect the propagation of an action potential? Myelin Promotes Rapid Impulse Transmission Along Axons How does myelin enhance the speed of action potential propagation? It insulates the axon and assembles specialized molecular structure at the nodes of Ranvier. In unmyelinated axons, the action potential travels continuously along the axons. Furthermore, what occurs at the nodes of Ranvier? Nodes of Ranvier are gaps in the myelin sheath coating on the neural axon.

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