The myelin sheath serves to ____________?
Correct answer: D. increase the speed of natural transmission
- A. break down epinephrine
- B. bypass the nodes of Ranvier
- C. decrease the speed of natural transmission
- D. increase the speed of natural transmission
Explanation
Myelin electrically insulates the axon and allows impulses to jump between nodes of Ranvier, producing faster natural transmission. It does not bypass the nodes; saltatory conduction depends on them.
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