In order for neurotransmitters to be released,_____ must enter the terminal button. A) Na⁺ B) Ca²⁺ C) K⁺ D) Cl^-

Question

Quizplus · Accepted Answer

Calcium ions (Ca2+) are needed to trigger the release of neurotransmitters from the terminal button of a neuron. This occurs as a result of an action potential arriving at the terminal button and causing voltage-gated calcium channels to open, allowing calcium ions to enter the cell. Once inside, the calcium ions trigger the release of neurotransmitter vesicles into the synaptic cleft between neurons. Therefore, option B, which includes Ca in its answer, is the best choice.

In Order for Neurotransmitters to Be Released,_____ Must Enter the Terminal