A disease that effects the myelin sheath is multiple sclerosis (MS). The function of the myelin sheath is to act as an insulator for the nerve cell. It's kind of like the rubber casing found on the...
Myelin sheath does several things that affect the speed of an action potential. It acts as an insulator around a neuron axon, thereby focusing the propagation of the action potential along the axis...
A neuron is analogous to an electric wire. If you look at an electric wire going from a lamp to a wall plug, you do not see the actual wire. Instead, you see the insulation. If you would scrape off...
