The following order of the events (#1-4) at a Cholinergic Sy…
The following order of the events (#1-4) at a Cholinergic Synapse is correct. __4__ ACh is removed by AChE (acetylcholinesterase). __1__ An action potential arrives and depolarizes the synaptic knob. __2__ Extracellular Ca2+ enters the synaptic cleft triggering the exocytosis of ACh. __3__ ACh binds to receptors and depolarizes the postsynaptic membrane.