Place the events in chemical synapse transmission in the correct order. (1) Ca²⁺enters axon terminal.
(2) Ligand-gated ion channels open in postsynaptic membrane.
(3) Neurotransmitter binds to postsynaptic receptor.
(4) Action potential reaches axon terminal of presynaptic neuron.
(5) Neurotransmitter released by exocytosis.

Question

Quizplus · Accepted Answer

The correct sequence for events in chemical synapse transmission starts with the action potential reaching the axon terminal of the presynaptic neuron (4), followed by the entry of calcium ions into the axon terminal (1), which triggers the release of neurotransmitter by exocytosis (5). The neurotransmitter then binds to receptors on the postsynaptic membrane (3), leading to the opening of ligand-gated ion channels (2).

Place the Events in Chemical Synapse Transmission in the Correct