In Multiple Sclerosis, the Myelin Sheaths Around the Axons of the Brain

question 23

Multiple Choice

In multiple sclerosis, the myelin sheaths around the axons of the brain and spinal cord are damaged and demyelination results. How does multiple sclerosis manifest at the level of the action potential?

• A) Action potentials move in the opposite direction on the axon.
• B) Action potentials move more slowly along the axon.
• C) No action potentials are transmitted.
• D) Action potentials grow stronger as they move down an axon.

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