Answer
Action potentials cause calcium channels of the synaptic cleft to open, which leads to an influx of calcium ions. These calcium ions stimulate the release of neurotransmitters from synaptic vesicles into the synaptic cleft as part of exocytosis.
Work Step by Step
Action potentials cause calcium channels of the synaptic cleft to open, which leads to an influx of calcium ions. These calcium ions stimulate the release of neurotransmitters from synaptic vesicles into the synaptic cleft as part of exocytosis.