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Why mylinsheath not continously present on axon of a neuron? |
| Answer» Myelin\xa0acts as an insulator by having high resistance and low capacitance within the internodal regions. This allows an electrical impulse to propagate rapidly down the axon, jumping from node to node, a process called saltatory conduction.\xa0Much like the insulation around the wires in electrical systems, glial cells form a membraneous\xa0sheath\xa0surrounding\xa0axons\xa0called\xa0myelin, thereby insulating the\xa0axon. This\xa0myelination, as it is called, can greatly increase the speed of signals transmitted between neurons (known as action potentials). | |