The diagram below shows the key events that occur during transmission across a cholinergic synapse.
Which row, from A to D, correctly identifies the processes or structures labelled W to Z in the diagram?
| W | X | Y | Z | |
|---|---|---|---|---|
| A | Calcium ion influx via ligand-gated channels | Exocytosis of neurotransmitter | Hydrolysis of neurotransmitter by acetylcholinesterase | Sodium ion influx via voltage-gated channels |
| W | X | Y | Z | |
|---|---|---|---|---|
| B | Calcium ion influx via voltage-gated channels | Endocytosis of neurotransmitter | Synthesis of neurotransmitter by acetylcholinesterase | Sodium ion influx via ligand-gated channels |
| W | X | Y | Z | |
|---|---|---|---|---|
| C | Calcium ion influx via voltage-gated channels | Exocytosis of neurotransmitter | Hydrolysis of neurotransmitter by acetylcholinesterase | Sodium ion influx via ligand-gated channels |
| W | X | Y | Z | |
|---|---|---|---|---|
| D | Sodium ion influx via voltage-gated channels | Exocytosis of neurotransmitter | Hydrolysis of neurotransmitter by choline acetyltransferase | Potassium ion efflux via ligand-gated channels |