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Nerves transmit messages by using chemical messengers called neurotransmitter. Some you may have heard of are acetylcholine, norepinephrine, and dopamine. Basically, an electrical impulse travels down a nerve starting at the dendrite, moving through the cell body, and finally to the axon. At the axon special receptors sense the electrical impulse and use voltage gated Calcium channels to release neurotransmitters across the synapse. In the synapse, the neurotransmitters travels to the next adjacent neuron where special receptors on its surface "pick up" the neurotransmitter, this caused a second electrical impulse, called an action potential, to be generated starting up the whole process again.. Dr. Dan

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