1.Sodium ion enters through the sodium ion channel into the 2.gustatory cell
3.Sodium ion begins to depolarize the cell
4.A graded potential is activated
5.Voltage gated Sodium channels are activated to open
6.Voltage gated Calcium channels are activated to open
7.Calcium ion binds to SNARE proteins (Initiating vesicle release)
8.*(RELEASES SEROTONIN!) not ATP
