The correct sequence for these events is
4, 2, 6, 7, 1, 8, 3, 5.
The following are the steps involved in transmission at a cholinergic synapse
1. Chemically regulated Na+ channel on the postsynaptic membrane are activated
2. Calcium ions enter the synaptic knob
3.Acetycholine is degraded by acethycholinesterase
4.An action potetial depolarize the synaptic knob at the presynaptic membrane
5.The synaptic knob absorb choline
6. Acetycholine is released from storage vesicle by exocytosis
7. Acetycholine binds to receptors on the postsynaptic membrane
8.Calcium ions are removed by the cytoplasm of the synaptic knob.