What is thought to significantly restrict the spread of calcium ions after they enter the nerve terminal through presynaptic calcium channels?

Question

Quizplus · Accepted Answer

Calcium buffers and binding proteins (chelators) in the cytoplasm of nerve terminals play a crucial role in restricting the spread of calcium ions after they enter through presynaptic calcium channels. These molecules bind to calcium ions, reducing their free concentration and limiting their diffusion within the cell, which is essential for the precise control of neurotransmitter release.

What Is Thought to Significantly Restrict the Spread of Calcium