What protects and insulates axons, speeding the rate at which nervous impulses can be sent, and reduces interference from other neurons?

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Quizplus · Accepted Answer

Myelin is a fatty substance that forms a sheath around axons, protecting and insulating them. This allows for faster transmission of nerve impulses and reduces interference from other neurons. Serotonin and GABA are neurotransmitters that play a role in neural signaling, but they do not directly protect or insulate axons. Nodes, also known as nodes of Ranvier, are gaps between myelin sheaths where the axon is exposed, allowing for saltatory conduction, which also helps speed up neural transmission. However, nodes are not the primary structure that protects and insulates axons.

What Protects and Insulates Axons, Speeding the Rate at Which