What channels in the presynaptic neuron open up in response to an action potential?

Voltage-gated calcium ion channels

The major one is voltage-gated calcium ion channels, as the influx of calcium is what subsequently triggers vesicles containing neurotransmitter to move and fuse to the presynaptic membrane and be expelled into the synapse via exocytosis.

0 replies

Leave a Reply

Want to join the discussion?
Feel free to contribute!

Leave a Reply

Your email address will not be published. Required fields are marked *