Which of the following ions directly triggers the release of neurotransmitter into the synaptic cleft?
A)sodium
B)chloride
C)calcium
D)potassium
E)magnesium

Question

Quizplus · Accepted Answer

Calcium ions directly trigger the release of neurotransmitter by binding to the synaptic vesicles, causing them to fuse with the presynaptic membrane and release their contents into the synaptic cleft. Sodium, chloride, potassium, and magnesium ions are involved in other aspects of neuronal signaling but do not directly trigger neurotransmitter release.

Which of the Following Ions Directly Triggers the Release of Neurotransmitter