Question

marlee has just been diagnosed with multiple sclerosis (ms). as the disease progresses, communication to some of her muscles may slow down, and she could lose some muscle control as a result of the degeneration of the ______ sheath.
axonal
neuronal
myelin
dendritic

Explanation:

Multiple sclerosis is characterized by the degeneration of the myelin sheath which insulates nerve fibers. This disruption affects nerve - signal transmission to muscles.

Answer:

C. myelin