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MDCAT Biology QUESTION #11268
Question 1
The hormone insulin is secreted by which cells of the pancreatic islets?
  • Alpha ($\alpha$) cells
  • Beta ($\beta$) cells✔️
  • Delta ($\delta$) cells
  • PP cells
Correct Answer Explanation
Beta ($\beta$) cells in the islets of Langerhans secrete insulin in response to high blood glucose. Alpha cells secrete glucagon, delta cells secrete somatostatin, and PP cells secrete pancreatic polypeptide.