Question

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

Answer 1

at the end of the axon,an electrical impulse sets off to release a chemical impulse. this chemicals travel in the synaptic gap and reach the dendrite of the other neuron and get converted again to electrical impulses and follow the same procedure.this process cannot be reversed as dendrites do not have the ability to convert electrical impulses to chemical.

hope this helped :)

Answer 2

We know that electrical singanl when reaches the axonal end of a neuron some Chemical substnace Is released. Which is responsible

for to generate same impulse on

another neuron.

Clearly, electrical signal is converted to Chemical signal at the axonal end. Now, these chemicals are absent at the dendritic end of the neuron, the electrical signal cannot be converts into Chemical signal.

Hence, it can't happen so..