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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.
3. axon. The dendrites receive impulses from sensory receptors or other neurons and send them towards the cell body, which contains the nucleus. Impulses are then conducted along the axons full length away from the cell body to connect with the dendrites of another neuron, muscle, organ or gland of some kind.mpulses that are sent along neurons are called action potentials. An action potential (also known as an impulse) is the electrical current that travels the length of an axon when a neuron has been stimulated. At rest the membrane inside of a neuron has a negative charge. This is called the resting membrane potential.