Neurones are nerve cells that carry information as tiny electrical signals. There are three different types of neurones

Where two neurones meet there is a tiny gap called a synapse. Signals cross this gap using chemicals. One neurone releases the chemical into the gap. The chemical diffuses across the gap and makes the next neurone transmit an electrical signal.

RECEPTORS are groups of specialised cells that can detect changes in the environment called stimuli.

certain receptors respond to different stimuli