Receptor sites neurotransmitters are present on HomeMedical Entrance ExamReceptor sites neurotransmitters are present onBiology, Medical, NEETReceptor sites neurotransmitters are present onOption 1 : Membranes of synaptic vesiclesOption 2 : Pre-synaptic membraneOption 3 : Post-synaptic membraneOption 4 : Tips of axons