Propagation occurs by electrotonic current flow and saltatory conduction in all neurons

Myelinated neurons have to regenerate the action potential at every point along their length

Action Potentials are conducted only by saltatory conduction, followed by electrotonic flow into terminals

Diameter is more important than myelination in determining conduction velocity, except in smaller neurons

Regeneration of the AP  at nodes of Ranvier in myelinated neurons is possible because of their high density of voltage-gated Na+ channels