What is the function of 'Nodes of Ranvier'?
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Correct answer: They are the only regions on a myelinated axon where ion exchange can occur
In myelinated axons, voltage-gated channels are concentrated at the Nodes of Ranvier. This is the only place where Na⁺ and K⁺ ions can move across the membrane to regenerate the action potential, enabling rapid saltatory conduction.
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