Neurotransmitter is released
A) when enough voltage- gated sodium channels open.
B) when threshold potential is reached.
C) in response to an action potential depolarizing the presynaptic membrane.

Question

Quizplus · Accepted Answer

Neurotransmitter release occurs when an action potential reaches the axon terminal of a neuron, causing depolarization of the presynaptic membrane. This depolarization triggers the opening of voltage-gated calcium channels, allowing calcium ions to enter the neuron and stimulate the release of neurotransmitters into the synaptic cleft.

Neurotransmitter Is Released