neurotransmitter release mechanisms. neurotransmitters are packaged into synaptic vesicles transmit signals from a neuron

flower leaf invertebrate yellow animal plant fish nature insect autumn petal sunlight underwater screenshot red branch green neurotransmitter release mechanisms neurotransmitters packaged synaptic vesicles transmit signals neuron target cell synapse opioids acetylcholine render opioid adenosine adrenaline anandamide anatomy care catecholamine chemical depression diagram disease dopamine education epinephrine glycine health healthcare healthy histamine hormone medical medicine mood narcotic nitric norepinephrine oxytocin recycle serotonin signal smoking somatostatin structure substance system triphosphate