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Each axon terminal contains thousands of membrane-bound sacs called vesicles, which in turn contain thousands of neurotransmitter molecules each. Neurotransmitters are chemical messengers which relay, amplify and modulate signals between neurons and other cells.
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).