The below flow chart depicts the classification of nervous system into various parts.

Example: A student who is getting late for school suddenly sees his watch then starts walking fast autonomously. Here, when the eyes see the time they send the information to brain through the sensory nerves. After which the brain receives the information, analyses them and sends the instructions to walk faster to muscle of our legs through the motor nerves. Then, the muscle of the legs act simultaneously by which student walks faster.