KnowraGlucagonLinked fromLinked fromThe 21 pages that link to Glucagon, each with the reason it gives.All 21Broader topic 3Related 14Compared with 4PancreasBroader topic: Pancreatic alpha cells release glucagon when blood glucose falls.Peptide hormoneBroader topic: It counterbalances insulin in the regulation of blood glucose.Second messenger systemBroader topic: It signals through cyclic AMP to promote hepatic glycogen breakdown and glucose release.