How do nerves impluses work?

A nerve impulse is like a very simple message; Either on or off. beacasue there are so many neurones which are connected to one another, this simple signal is enough to cary the most complicated message, throughout the whole of the body's nervous system. as a nerve impulses arrives at the junstion between two nerve cells. it is carried accross the gap or synapse by chemicals called neurotrancmitter, thses contact sensitive areas in the next nerve cell, and the nerve impulse is carried a long.