Voltage-gated Ca2+ channels open
Extracellular Ca2+ enters terminal and binds to sensor protein in the cytoplasm
Action potential reaches axon terminal
Ca2+-protein complex stimulates fusion of the docked synaptic vesicle with the plasma membrane
Exocytosis of neurotransmitter into synaptic cleft
Action potential reaches axon terminal
Voltage-gated Ca2+ channels open
Extracellular Ca2+ enters terminal and binds to sensor protein in the cytoplasm
Voltage-gated Ca2+ channels open
Extracellular Ca2+ enters terminal and binds to sensor protein in the cytoplasm
Ca2+-protein complex stimulates fusion of the docked synaptic vesicle with the plasma membrane Exocytosis of neurotransmitter into synaptic cleft
Action potential reaches axon terminal
Ca2+-protein complex stimulates fusion of the docked synaptic vesicle with the plasma membrane
Extracellular Ca2+ enters terminal and binds to sensor protein in the cytoplasm
Exocytosis of neurotransmitter into synaptic cleft