Q:

Pancreatic glucagon

safaTerkawi
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2022-08-14
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Pancreatic glucagon.

  1. Is produced by the beta cells of the islets of Langerhans.
  2. Is a polypeptide.
  3. Output is inversely proportional to the blood glucose level.
  4. Has a half-life in the circulation of 3–4 hours.
  5. Increases the breakdown of liver glycogen.
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safaTerkawi
2022-08-14
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A. False It is produced by the alpha cells.

B. True It is quite similar in structure to secretin.

C. True It normally prevents a serious fall in blood glucose.

D. False It is much shorter (5–10 minutes); this allows glucagon levels in the blood to adjust rapidly to changes in blood glucose levels.

E. True It also mobilizes fatty acids.

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