Compléter Science Biology Game Version en ligne ms vompean's class par isabela Maesano 1 emotions sexual energy breaking problem carbohydrates Dopamine focus functioning anxiety feel muscle regulating digestive neurotransmitter is an excitatory neurotransmitter that contributes to attention , , memory and solving . Serotonin is an inhibitory that regulates the appropriate of the system . It also makes you calm and stable . Epinephrine is an excitatory neurotransmitter that increases production in the body by stimulating the down of stored . Endocannabinoids is an inhibitory neurotransmitter that regulates , feelings of fear and , feelings of motivation and reward , appetite and behaviour . Acetylcholine activates action in the body .