What ion is necessary for the release of neurotransmitter from synaptic vesicles?
A)chloride
B)sodium
C)potassium
D)calcium

Question

Quizplus · Accepted Answer

Calcium ions are necessary for the release of neurotransmitter from synaptic vesicles. When an action potential reaches the axon terminal, it triggers the opening of voltage-gated calcium channels, allowing calcium ions to flow into the cell. This influx of calcium ions causes the synaptic vesicles to fuse with the presynaptic membrane and release the neurotransmitter into the synaptic cleft. Without sufficient calcium ions, neurotransmitter release is impaired or prevented.

What Ion Is Necessary for the Release of Neurotransmitter from Synaptic