why is the flow of signals in a synapse from axonal end of one neuron to dendritic end of another neuron but not the reverse
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Question: Why is the flow of signals in a synapse from axonal end of one neuron to dendritic end of another neuron but not the reverse?
Answer: The electrical impulse reaches the axon terminal in the axon-dendrite synapse, it stimulates the exocytosis of vesicles containing. . neurotransmitters. At synapse, the axon end does not contain any chemoreceptor sites so that reverse flow of electrochemical impulses is not possible.
Answer: The electrical impulse reaches the axon terminal in the axon-dendrite synapse, it stimulates the exocytosis of vesicles containing. . neurotransmitters. At synapse, the axon end does not contain any chemoreceptor sites so that reverse flow of electrochemical impulses is not possible.
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Electrical impulse travels through a neuron. But to be transmitted to another neuron, it need to be passed in the form of neurotransmitters. Neurotransmitters are specialized chemicals. These can enter a neuron only through specialized channels. Such channels are present in dendrites but not in axon. On the other hand, a neurotransmitter can enter a dendrite. Due to this, the flow of signals in a synapse is from axonal end of one neuron to dendritic end of another neuron but not the reverse.
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