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[Free Registration/Login may be required to access all resource tools.] The nervous system is made up of nerves. A nerve is a bundle of nerve cells. A nerve cell that carries messages is called a neuron. The messages carried by neurons are called nerve impulses. Nerve impulses can travel very quickly because they are electrical impulses. Learn more about nerve cells and nerve impulses in this learning module produced by CK-12.
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- Knovation Readability Score: 2 (1 low difficulty, 5 high difficulty)