In Myelinated Axons the Voltage-Regulated Sodium Channels are Concentrated at the Nodes

Question

In myelinated axons the voltage-regulated sodium channels are concentrated at the nodes ofRanvier.

Accepted Answer

The voltage-regulated sodium channels in myelinated axons are clustered at the nodes of Ranvier, which are the gaps in the myelin sheath where the axon membrane is exposed. This clustering of sodium channels allows for efficient propagation of action potentials along the axon.