Angela O'Connor

Angela O'Connor

Angela O'Connor
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Nodes of Ranvier Between areas of myelin are non-myelinated areas called the nodes of Ranvier. Because fat (myelin) acts as an insulator, membrane coated with myelin will not conduct an impulse. So, in a myelinated neuron, action potentials only occur along the nodes and, therefore, impulses 'jump' over the areas of myelin - going from node to node in a process called saltatory conduction (with the word saltatory meaning 'jumping'): http://people.eku.edu/ritchisong/301notes2.htm

Human Physiology - Neurons & the Nervous System

Generating an Action Potential - Axons and Action Potential

Learn more about nerve impulse transmission within a neuron: action potential in the Boundless open textbook. Signals are transmitted from neuron to neuron via an action potential, when the axon membrane rapidly depolarizes and repolarizes.