Final answer:
The myelin sheath is the protective coating around neurons that speeds up neural impulse transmission.
Explanation:
The myelin sheath is the protective coating around the neuron that speeds the transmission of neural impulses. It is like insulation around an electrical cord, allowing nerve impulses to skip rapidly along the axon. Nodes of Ranvier are gaps in the myelin sheath that help recharge the signal as it travels.
Learn more about neuron myelin sheath here:
https://brainly.com/question/13017782
