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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?
The flow of signals in a synapse reaching the axonal end of one neuron releases the chemical substance. The released chemicals progress towards the dendrite end of another neuron and generate an electrical impulse or signal further.
Thus, the electrical signal is converted into a chemical signal at the tip of axons.
As the chemicals are absent at the dendritic tip of the neuron, the electrical signal cannot be converted into a chemical signal.
Therefore, the flow of signals in a synapse from the axonal end of one neuron to the dendritic end of another neuron takes place but not in the reverse direction.
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