Demyelinating diseases such as multiple sclerosis disrupt normal neural communication by
A)destroying receptors on postsynaptic cells so that neurotransmitters cannot bind normally.
B)creating lesions in the blood-brain barrier that allow toxic substances to enter the brain from the bloodstream.
C)causing deterioration of the fatty substance that normally coats and insulates axons.
D)diminishing the activity of the sodium-potassium pumps that usually maintain the resting potential of neurons.

Question

Quizplus · Accepted Answer

Demyelinating diseases such as multiple sclerosis cause the deterioration of the fatty substance called myelin, which normally insulates axons, facilitating the rapid conduction of nerve impulses. The loss of myelin disrupts the normal neural communication, leading to a range of symptoms, including weakness, numbness, and cognitive impairments.

Demyelinating Diseases Such as Multiple Sclerosis Disrupt Normal Neural Communication