human neuron on a white background

acetylcholine acids adenosine adrenaline amino anandamide anatomy axon bio biological biology body brain brainstorm care catecholamine cell cells chemical dendrite depression diagram disease dopamine education energy epinephrine glycine head health healthcare healthy histamine hormone human illustration mechanisms medical medicine mental micro mind mood narcotic nerve nerves nervous neural neuro neurology neuron neurons neurotransmitter nitric norepinephrine nucleus opioid organism oxide oxytocin peptide pulse receptor recycle scheme science serotonin signal smoking somatostatin structure substance synapse synaptic system target transmit triphosphate vector vesicles