What are neurotransmitters and how do they function? Using examples, describe the role neurotransmitters play in mental health.

Students' answers may vary.Key terms and concepts that may be included in student responses:
▪ Neurotransmitters-biochemicals that act as messengers carrying impulses
▪ Synaptic gap-gap between the synaptic terminals and the adjacent neurons
▪ Receptors-molecules on the membrane of adjacent neurons
▪ Processes of reuptake and degradation of neurotransmitters-malfunctioning of either process results in high or low levels of neurotransmitter in the synapse
▪ Serotonin-plays an important role in emotional well-being and in dysfunctional behaviors
▪ Dopamine-influences our experience of reinforcements or rewards and the functioning of muscle systems
▪ Norepinephrine-cocaine and amphetamine slows its reuptake
▪ Gamma-aminobutyric acid (GABA)-inhibits the action of other neurotransmitters