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Over the course of a year, you notice that you are more frequently losing your balance, are unable to keep your train of thought, and occasionally have double vision. After visiting several specialists, you are diagnosed with multiple sclerosis (MS), the hardening and ultimate loss of the myelin sheath which insulates axons.
-The onset of these symptoms follows the loss of the myelin sheath, leading to
A)a loss in conduction speed of action potentials
B)an increase in conduction speed of action potentials.
C)consistent depolarization at the nodes of Ranvier.
D)increased saltatory conduction.
E)an increased diameter of the axon.

Question

Quizplus · Accepted Answer

The loss of the myelin sheath decreases the speed of conduction of action potentials, which can result in symptoms such as balance and coordination problems, difficulty focusing, and double vision.

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