What extracellular ion is necessary for release of neurotransmitter for salty and sour tastes?

Question

Quizplus · Accepted Answer

Calcium ions (Ca2+) are essential for the release of neurotransmitters in response to various stimuli, including those that trigger salty and sour taste perceptions. This process involves the influx of Ca2+ into cells, which facilitates the fusion of neurotransmitter-containing vesicles with the plasma membrane and the subsequent release of neurotransmitters into the synaptic or extracellular space.

What Extracellular Ion Is Necessary for Release of Neurotransmitter for Salty