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  • 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?

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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Solution:

The electrical signal travels through a neuron. To be transmitted to another neuron, it needs to be passed in the form of neurotransmitters. Neurotransmitters are chemical substances that can enter a neuron only through specialized channels which are present only in dendrites not in axons.

Due to this, the flow of signals in a synapse is from the axonal end of one neuron to the dendritic end of another neuron but not the reverse.

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