The following are steps involved in transmission at the cholinergic synapse: 1. Chemically gated ion channels on the postsynaptic membrane are opened. 2. Calcium ions enter the axon terminal. 3. An action potential depolarizes the axon terminal at the presynaptic membrane. 4. Acetylcholine is released from storage vesicles by exocytosis. 5. Acetylcholine binds to receptors on the postsynaptic membrane. The correct sequence for these events is The following are steps involved in transmission at the cholinergic synapse: 1. Chemically gated ion channels on the postsynaptic membrane are opened. 2. Calcium ions enter the axon terminal. 3. An action potential depolarizes the axon terminal at the presynaptic membrane. 4. Acetylcholine is released from storage vesicles by exocytosis. 5. Acetylcholine binds to receptors on the postsynaptic membrane. The correct sequence for these events is 3, 2, 4, 5, 1. 4, 2, 1, 5, 3. 2, 5, 4, 1, 3. 2, 4, 1, 3, 5. 1, 2, 3, 4, 5.