If Ca++ was blocked,
A) Na+ would be stuck inside of the cell.
B) neurotransmitters could not be released from the cell.
C) voltage-gated ion channels would remain closed.
D) passive channels would close.
E) passive channels would open.

Question

Quizplus · Accepted Answer

Calcium ions play a crucial role in triggering the release of neurotransmitters from the presynaptic cell. If Ca++ ions are blocked, neurotransmitters would not be released from the cell, leading to impaired communication between neurons. Blocking Ca++ ions would not directly affect the movement of Na+ ions or the opening/closing of ion channels.

If Ca++ Was Blocked