chemical synapse

acetylcholine acids adenosine adrenaline amino anandamide anatomy axon bind biology brain ca2 care catecholamine cell channel chemical cleft depression diagram disease dopamine education epinephrine gated glycine health healthcare healthy histamine hormone human illustration ions ligand mechanisms medical medicine membrane mood narcotic nerve nervous neuro neurology neuron neurons neurotransmitter neurotransmitters nitric norepinephrine opioid oxide oxytocin peptide presynaptic receptor recycle releasing response scheme science serotonin signal smoking somatostatin structure substance synapse synaptic system target terminal transmit triphosphate vector vesicles voltage