Multiple sclerosis is a disorder characterized by the breakdown of the myelin sheath around axons in the central nervous system. The absence of a fully functional myelin sheath causes

Question 5 options:

abnormal functioning of the sodium-potassium exchange pump

an attack on the Schwann cells by the immune system

neural impulses to travel more slowly than normal

an increase in the amount of saltatory conduction

neural impulses to travel more slowly than normal