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If you're asking what the gap between the neurons is called, it is the synapse.

If your asking what the fibrous looking ends of a neuron are called they are the dendrites.

In general, though, when a nerve impulse travels through a nerve fiber, it actually makes repeated hops between the segments of the myelin sheath (the outer coating of the nerve fiber - under a microscope this sheath looks similar to a string of sausage links). As it approaches the end of the fiber the signal is attached to a carrier protein to travel the synaptic gap and into the receptor dendrites of the next neuron in the signal's path.

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∙ 16y ago
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