synapse structure. neurotransmitter, synaptic vesicles and synaptic cleft

anatomical anatomy axon biology brain cell central cleft connection dendrite dendrites diagram dopamine drug illustration impulse medical microbiology nerve nervous neural neurology neuron neurone neurons neuroscience neurotransmission neurotransmitter pain postsynaptic presynaptic receptor release science sensory serotonin signal structure synapse synaptic transmit vector vesicle vesicles