ANATOMY

Detailed explanation-1: -By acting as an electrical insulator, myelin greatly speeds up action potential conduction (Figure 3.14). For example, whereas unmyelinated axon conduction velocities range from about 0.5 to 10 m/s, myelinated axons can conduct at velocities up to 150 m/s.

Detailed explanation-2: -Myelinated neurons conduct impulses faster than unmyelinated neurons because nerve impulses jump over the myelin sheath rather than travel through it, making the distance to the axon terminal shorter.

Detailed explanation-3: -Summary. Myelin can greatly increase the speed of electrical impulses in neurons because it insulates the axon and assembles voltage-gated sodium channel clusters at discrete nodes along its length.

Detailed explanation-4: -Peripheral nervous system axons, which relay action potentials elicited by various stimuli, can be myelinated to a differing degree by specialized Schwann cells that allow them to conduct the electrical signal 10 times faster than unmyelinated fibers of the same diameter [1].

Detailed explanation-5: -Myelinated neuron are faster because The myelin sheath is a fatty layer made up of the hugely expanded plasma membrane of schwann cells which surround the axon of neurons.