Knowledge Tree
glucagon
Facts (12)
Sources
Homeostasis and Health: From Balance to Change | Biological Theory link.springer.com Oct 14, 2025 5 facts
claimGlycemia regulation is a phenomenon usually described through negative feedback to a setpoint, where glucagon is secreted by pancreatic alpha cells in the presence of hypoglycemia to stimulate the production of glucose from glycogen stored in the liver.
claimIn diabetes type 1, there is a paradoxical secretion of glucagon in response to hyperglycemia, which depends on the direct effects of hyperglycemia on pancreatic alpha cells that impair their activity.
claimIn the standard glycemia regulation system, pancreatic alpha cells secrete glucagon in response to hypoglycemia, which stimulates the liver to produce glucose from stored glycogen.
claimIn type 1 diabetes, pancreatic alpha cells paradoxically secrete glucagon in response to hyperglycemia, a process that occurs even before the destruction of pancreatic beta cells, which normally produce insulin to inhibit glucagon secretion.
claimIn type 1 diabetes, hyperglycemia causes a paradoxical secretion of glucagon because the high glucose levels directly impair the activity of pancreatic alpha cells, an effect not accounted for in standard negative feedback models.
7 Major Organ Systems: Functions and Connections instituteofhumananatomy.com Nov 23, 2025 2 facts
claimWhen human blood sugar levels drop too low, the endocrine system releases glucagon to prompt the release of stored glucose.
measurementThe pancreas produces insulin and glucagon to maintain blood sugar levels in a healthy range of 70-100 mg/dL.
7.8 Homeostasis and Feedback - Human Biology humanbiology.pressbooks.tru.ca 1 fact
claimThe hormone glucagon causes the breakdown of glycogen, which is the carbohydrate used for energy storage in animals, into glucose for use as an energy source.
Systems and organs | Anatomy and Physiology | Research Starters ebsco.com 1 fact
claimThe pancreas adds enzymes, bicarbonate (to neutralize stomach acid), insulin, and glucagon to the chyme in the duodenum.
4.4: Feedback Loops - Biology LibreTexts bio.libretexts.org Feb 28, 2021 1 fact
procedureWhen blood glucose levels are too low, the body releases glucagon, which causes the release of glucose from body cells.
10.7: Homeostasis and Feedback - Biology LibreTexts bio.libretexts.org Sep 4, 2021 1 fact
claimPancreatic alpha cells release glucagon into the bloodstream when blood glucose levels fall below the normal range, signaling cells to break down stored glycogen into glucose until levels return to normal.
Homeostasis and Feedback Loops | Anatomy and Physiology I courses.lumenlearning.com 1 fact
claimNegative feedback loops involving insulin and glucagon maintain blood glucose levels within a narrow concentration range in the human body.