The insulation around a neuron's axon that has an effect on the speed of the action potential is called the
A) axonal insulation
B) myelin sheath.
C) fatty insulation.
D) Nodes of Ranvier.

Question

Quizplus · Accepted Answer

The myelin sheath is the insulation around a neuron's axon that affects the speed of the action potential. This insulating layer is made up of fatty substance and is interrupted by small gaps called Nodes of Ranvier, which aid in the conduction of the electrical signal. A and C are made-up terms, while D refers specifically to the gaps in the myelin sheath, not the insulation itself.

The Insulation Around a Neuron's Axon That Has an Effect