In multiple sclerosis the myelin sheaths around the axons of the brain and spinal cord are damaged and demyelination results.How does this disease manifest at the level of the action potential?
I.Action potentials move in the opposite direction on the axon.
II.Action potentials move more slowly along the axon.
III.No action potentials are transmitted.

Question

Quizplus · Accepted Answer

In multiple sclerosis, demyelination slows down the conduction of action potentials along the axon due to the loss of the insulating myelin sheath, but it does not reverse their direction or completely stop their transmission.

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