Acetylcholine is released into the synaptic cleft under the influence ofMultiple ChoiceCalcium ionsLocal currentsSodium ionsLow concentration of choline
Question
Acetylcholine is released into the synaptic cleft under the influence of
- Multiple Choice
- Calcium ions
- Local currents
- Sodium ions
- Low concentration of choline
Solution
Acetylcholine is released into the synaptic cleft under the influence of Calcium ions.
Here's a step-by-step explanation:
- An action potential (electrical signal) travels down the neuron's axon towards the axon terminal.
- This action potential causes voltage-gated calcium ion channels to open.
- Calcium ions then flood into the neuron.
- The influx of calcium ions causes vesicles filled with acetylcholine to move to and fuse with the membrane of the axon terminal.
- Acetylcholine is then released into the synaptic cleft via exocytosis, influenced by the presence of the calcium ions.
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