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Why is the flow of signals in a synapse from axonal end of one neuron to dendrite end of another neuron but not the reverse?

Posted by Niharika Singh 6 years, 10 months ago

CBSE > Class 10 > Science

4 answers

Niharika Singh 6 years, 10 months ago

Shivam , that's the question is asking that why only ,flow of signals in a synapse from axonal end of one neuraon to dendrite end of another neuron ? Why its not viceversa? Please read the question carefully?

0Thank You

Shivam Kumar 6 years, 10 months ago

As you say reverse but how it can backflow cause neurons are the longest cell in our body and also it is arranged in such a way and generally from one neuron it will pass to another and why it have to play forth&back . This question had no sense!!

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Ayush Tomar 6 years, 10 months ago

Because only dendrites can receive impulses which are present only On one side

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Gaurav Seth 6 years, 10 months ago

The synapse actually act like a one-way valve because the chemical substance is present only on one side of the gap. This chemical diffuses towards the dendrite end of next neuron where it generates an electrical signal. Since, the chemicals are absent at the dendritic end of neuron, the nerve impulse can go across only from one side (which contains the chemical substance). In this way, it is ensured that nerve impulses travel in only one direction (through particular set of neurons).

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CBSE > Class 10 > Science