Question

why do impulses flow only in one direction in a reflex arc

Answer 1

This is electrochemical energy. Neurotransmitters are molecules that fit like a lock and key into a specific receptor. ... Therefore, nerve impulses cannot travel in the opposite direction, because nerve cells only have neurotransmitter storage vesicles going one way, and receptors inone place.

Answer 2

I have explained this in very simple language....Hope it helps

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