How the structure of synapse ensures that impulses travel in one direction?
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Neurotransmitters are molecules that fit like a lock and key into a specific receptor. The receptor is located on the next cell in the line. ... So, you can see, nerve impulses cannot travel in the opposite direction, because nerve cells only have neurotransmitter storage vesicles going one way, and receptors in one place.
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there is only neurotransmitters on one side of the synapse,so the impulses can only go across from that side.
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