1. Chemical Synapse Terminal bouton is separated from Copyright O The uo.H Companies, c. Permission required for reproduction or display Action A Xon postsynaptic cell by Cactpotentials Action Caz+ otential synaptic cleft Ca2+ Ⅴ esicles fuse with Protein kinase activates. Protein kinase inactive Calmodulin Synaptic (inactive axon membrane and vesicles phosphorylates synapsin Ntreleased b Docking proteins Synaptic cleft exocytosis Fusion and exocytosis Ca Amount of nts Neurotransmitter oo released released depends upon Cas+ frequency of.1. Chemical Synapse • Terminal bouton is separated from postsynaptic cell by synaptic cleft. • Vesicles fuse with axon membrane and NT released by exocytosis. • Amount of NTs released depends upon frequency of AP