The Steps Below Refer to Various Stages in Transmission at a Chemical

question 36

Multiple Choice

The steps below refer to various stages in transmission at a chemical synapse: 1. Neurotransmitter binds with receptors associated with the postsynaptic membrane.
2) Calcium ions rush into neuron's cytoplasm.
3) An action potential depolarizes the membrane of the axon terminal.
4) The ligand-gated ion channels open.
5) The synaptic vesicles release neurotransmitter into the synaptic cleft.
Which sequence of events is correct?

• A)1 → 2 → 3 → 4 → 5
• B)2 → 3 → 5 → 4 → 1
• C)3 → 2 → 5 → 1 → 4
• D)4 → 3 → 1 → 2 → 5
• E)5 → 1 → 2 → 4 → 3

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