Multiple Sclerosis (MS) Is a Progressive Inflammatory Disease of the Central

Multiple Choice

Multiple sclerosis (MS) is a progressive inflammatory disease of the central nervous system characterized by intermittent damage to myelin (called demyelination) caused by the destruction of specialized cells (oligodendrocytes) that form the substance.
Given what you know about the function of myelin, predict the consequences associated with its progressive loss.

A) Sensory abnormalities (e.g., tingling, numbness, itching, tightness, burning, shooting pain) and motor coordination loss.
B) Racing heartbeat, hyperactivity and nausea.
C) Low levels of potassium in the blood (hypokalemia) .
D) Balance and equilibrium abnormalities (e.g., dizziness, vertigo, uncoordinated movements, tremor) .