Question 54 / 58:  Explain the mode of action of sulphonylureas in stimulating insulin secretion (can use diagram).
Refer to book for diagram. 

1) Binds to SUR1 receptors (only on B cells)

2) Closes K+ ATP channel

3) Depolarises membrane

4) Opens voltage-dependent/gated Ca2+ channel (V(D/G)CC)

5) Stimulates exocytosis of insulin

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Pharmacology (Test) [Excluding Nervous System]

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Szilárd Jankó
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