What ion triggers synaptic vesicles to release neurotransmitters into the synaptic cleft?
A)calcium
B)sodium
C)chlorine
D)magnesium

Question

Quizplus · Accepted Answer

Calcium ion triggers synaptic vesicles to release neurotransmitters into the synaptic cleft. When an action potential reaches the synaptic terminal, it depolarizes the membrane, which results in the opening of voltage-gated calcium channels. Calcium ions then enter the terminal and trigger the fusion of synaptic vesicles with the presynaptic membrane, releasing neurotransmitters into the synaptic cleft.

What Ion Triggers Synaptic Vesicles to Release Neurotransmitters into the Synaptic