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d. Multiple sclerosis (MS) is a disease in which the myelin sheaths are destroyed in the brain and spinal cord. With what process does this interfere and what would be the consequences? e. Discuss the two main factors to influence conduction speed of an action potential. BONUS: (2 points) Does a local potential guarantee the creation of an action potential? Explain.

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(d)In Multiple sclerosis, the neurons in the brain and spinal cords lose myelin sheath (demyelination) which is an insulating cover. When the myelin is lost, a neuron can no longer effectively conduct electrical signals. Hence it can result in a range of symptoms such as double vision, blindness in one eye, muscle weakness, trouble with sensation, or trouble with coordination

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