The 7 Major neurotransmitters and their functions.
| A neurotransmitter used by neurons in the PNS and CNS in the control of functions ranging from muscle contraction and heart rate to digestion and memory. | ||
| A neurotransmitter involved in arousal, as well as in learning and mood regulation. | ||
| A neurotransmitter used by cells in parts of the brain involved in the regulation of sleep, mood and eating. | ||
| A neurotransmitter used in the parts of the brain involved in regulating movement and experiencing pleasure. | ||
| inhibits the firing of neurons | ||
| An excitatory neurotransmitter that helps strengthen synaptic connections between neurons. | ||
| bind to opiate receptors and moderate pain | 

