5 Questions
What is the composition of insulin?
Pro-insulin (A chain + Connecting [C] chain + B chain)
Which cells in the pancreas secrete somatostatin?
Delta cells (δ-cells)
What is the mechanism of insulin secretion in beta cells?
Glucose enters by GluT2, increases ATP, K+ channel blockade, affects K+ efflux, depolarization of cell membrane, Ca2+ influx, exocytosis of insulin
Which type of cells secrete glucagon in the pancreas?
Alpha cells (α-cells)
What maintains low basal levels of circulating insulin?
Constant β-cell secretion
Test your knowledge of pancreatic hormones and antidiabetic drugs in this pharmacology quiz. Learn about the different types of cells in the islets of Langerhans and their secretions, including insulin, glucagon, somatostatin, and pancreatic polypeptide.
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