2 - Glucose moves into beta cells by facilitated diffusion., 5 - Potassium ions increase inside the beta cells., 3 - The glucose is used to make ATP., 1 - Concentration of glucose in the blood increases., 9 - The calcium ions cause the vesicles to move closer to the cell surface membrane., 10 - The vesicles release insulin out of the cell by exocytosis., 6 - The membrane of the beta cell is depolarised., 7 - The calcium voltage-gated channels open., 8 - Calcium ions diffuse into the beta cell., 4 - The extra ATP causes the potassium channels to close.,

Insulin release from beta cells

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