In nerve fi bres with myelin sheaths, which of the following is true about the electrical conduction? A. It is ‘saltatory’, so propagates at higher speed B. It requires more energy to send an impulse C. The conduction between adjacent axons is enhanced (‘cross talk’ is increased) D. It is slower due to the separation between the ‘nodes of Ranvier’
Option A. The myelin sheath will increase the rate of conduction alongside an axon because the action potential is regenerated while migrating Na ions attain the subsequent node. It “jumps” (saltates) from one node to the subsequent.
