This worksheet teaches students about the common neurotransmitters and what their action is. Neurotransmitters either inhibit or excite a nerve impulse. This sheet also shows the students the synapse and what the neurotransmitters do within. Students have a bit of fun making faces to go along with the action of each neurotransmitter. It can be glued into their notebooks also. It would be a good lesson to give students before you teach about drugs and alcohol.