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frosja888 [35]
3 years ago
5

This big question, make sure to get it right.

Biology
1 answer:
Mkey [24]3 years ago
5 0
<span>A nerve impulse is an electrical signal that travels along an axon. There is an electrical difference between the inside of the axon and its surroundings, like a tiny battery. When the nerve is activated, there is a sudden change in the voltage across the wall of the axon, caused by the movement of ions in and out of the neuron. This triggers a wave of electrical activity that passes from the cell body along the length of the axon to the synapse. Does this help you?</span>
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