Essential Biochemistry - Neurotransmitters (Section 2 - No. 46)
Which of the following events occurs during neurotransmitter release?
Neurotransmitters diffuse across the presynaptic membrane
Calcium ions enter the presynaptic neuron
The postsynaptic membrane depolarizes
Neurotransmitters bind to receptors on the presynaptic neuron
Explanation
Calcium ions enter the presynaptic neuron triggering the release of neurotransmitters.