Question

Why do impulses flow only in one direction in a reflex arc ?

Answer 1

The receptor is located on the next cell in the line. ... Therefore, nerve impulses cannot travel in the opposite direction, because nerve cells only have neurotransmitter storage vesicles going one way, and receptors in one place.

Answer 2

The receptor is located on the next cell in the line. ... Therefore, nerve impulses cannot travel in the opposite direction, because nerve cells only have neurotransmitter storage vesicles going one way, and receptors inone place.