(Solved): Multiple sclerosis (MS) causes the myelin sheath of neurons in the central nervous system (CNS) ...

Multiple sclerosis (MS) causes the myelin sheath of neurons in the central nervous system (CNS) to degrade. How does MS affect the speed of the action potential? A) MS causes the nodes of Ranvier to become smaller, allowing the action potential to jump. B) MS causes more IPSPs to occur, leading to less frequent action potentials. C) MS causes the overall refractory period to become longer, resulting in slower action potential propagation. D) MS causes saltatory conduction to occur less effectively, resulting in slower action potential propagation. A neurotransmitter that induces IPSPs binds to a postsynaptic neuron. What ion is affected, and what effect will this have on the membrane potential? A) Sodium; hyperpolarization B) Chloride; hyperpolarization C) Sodium; depolarization D) Chloride; depolarization