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Lesia Marie. A nerve impulse is an electrical charge that travels down the cell membrane of a neuron's dendrite and/or axon through the action of the Na-K pump. The inside of a neuron's cell membrane is negatively-charged while the outside is positively-charged. It is called Action potential.
What part of a neuron carries nerve impulses away from the cell body? The axon carries the signal away from the neuron, while the dendrite carries the signal to the neuron. The cell body of a neuron (a nerve cell) receives signals fr â¦ om its neighbors; when prompted thereby to send a signal of it's own, the axon (an extension protruding from the body) propagates that signal electrochemically via an ion pump to other neurons at the terminal synapse (a small gap between one neuron and the next).