Medical Conditions - Neurotransmitters

The chemical messengers of the body are typically referred to as neurotransmitters. They are the chemicals that the nervous system uses to send and receive messages between neurons and muscles. A neurotransmitter can have three effects on a neuron: excitatory, inhibitory, or modulatory. In the receiving neuron, an excitatory transmitter encourages the formation of an electrical signal known as an action potential, whereas an inhibitory transmitter inhibits it.