The synapse is a connection between a neuron and its target cell (which is not necessarily a neuron). The presynaptic element is the synaptic end bulb of the axon where Ca2+ enters the bulb to cause vesicle fusion and neurotransmitter release. The neurotransmitter diffuses across the synaptic cleft to bind to its receptor. The neurotransmitter is cleared from the synapse either by enzymatic degradation, neuronal reuptake, or glial reuptake.
Cut Rita Zahara
“The Synapse,” Open Educational Resource (OER) - USK Library, accessed December 2, 2023, http://uilis.usk.ac.id/oer/items/show/1175.