Which of the following is TRUE about myelination? A It is necessary for saltatory conduction B It slows conduction along dendrites C It acts to electrically insulate synapses ONLY D It occurs only in the central nervous system
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Myelin can greatly increase the speed of electrical impulses in neurons because it insulates the axon and assembles voltage-gated sodium channel clusters at discrete nodes along its length. Myelin damage causes several neurological diseases, such as multiple sclerosis.
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