What is glucagon?

Glucagon is a hormone secreted (released) by the pancreas when the concentration of glucose in the blood is low. A nice way to remember this is 'glucaGON is released because glucose is GONE' (this isn't quite true as glucose will never be fully gone). Glucagon will travel to the liver (in the blood as it is a hormone). Here it triggers the conversion of glycogen into glucose. The concentration of glucose in the blood will now begin to rise. Be careful not to confuse glucose (carbohydrate), glycogen (carbohydrate) and glucagon (hormone). They all look and sound very similar but they are completely different things!

Hi Orie,

Glucagon is a pancreatic hormone, produced by alpha cells of the pancreas. It raises concentration of glucose and fatty acids in the bloodstream.

If the concentration of glucose in the blood decreases below a certain level, cells may not have enough glucose for respiration and may not be able to function properly. The control of blood glucose level is a key part of homeostasis. Blood glucose concentration is controlled by two hormones secreted by endocrine tissue in the pancreas. This tissue is made up of a group of cells known as the islets of Langerhans.

I hope this helps.

A peptide hormone involved in controlling glucose levels in the blood, they do this by promoting the breakdown of glycogen into glucose. Glucagon is produced by alpha cells in the islets of Langerhans.

 It is a peptide hormone, produced by alpha cells of the pancreas. It works with other hormones such as insulin to control glucose levels in the blood.

Glucagon is a hormone released by alpha cells in the islets of langerhan in the pancreas when blood glucose levels are low. It acts as a secondary messengers model along with adrenaline in order to stimulate glycogenolysis, gluconeogenisis and decrease rates of respiration in order to increase blood glucose levels

glucagon is a hormone produce by the alpha cells in the pancreas. It breaks down glycogen into glucose to increase glucose levels in the body when it is too low.

It is a peptide hormone, produced by alpha cells of the pancreas. When your blood glucose levels are low, the body can convert glycogen back into glucose and secrete it back into the blood stream, the hormone involved in this complex process is glucagon. The decrease in blood glucose levels is detected by the alpha and beta cells in the pancreas. After glycogen is converted into glucose, it can be used in cellular respiration.

Glucagon is involved in a negative feedback loop for low blood glucose concentration.

You will also come across the hormone insulin when studying glucagon.

Glucose is converted to glucagon when the body has high blood glucose concentrations (particularly after a meal) . This glucagon can later be broken down back to glucose via the assistance of enzymes (gluconeogenesis)

Glucagon is a hormone that stimulates and regulates blood sugar in the liver, breaks down glycogen (sugar) to release into the blood as glucose, it also breaks down amino acids and triglycerides (fat) into glucose for fuel for the body.

Glucagon, produced by alpha cells in the pancreas is a peptide hormone, that controls blood sugar levels in a human

Glucagon is a peptide hormone produced by alpha cells in the pancreas. This hormone increases glucose and fatty acid levels in the bloodstream and is considered to be the body's chief catabolic hormone. 

Glucagon is a hormone that is secreted by the pancreas in response to low blood glucose concentration. It raises blood glucose concentration by breaking down glycogen (which is a glucose storage molecule) found in the liver into glucose.

Glucagon is a hormone that regulates your blood sugar levels.

Glucagon is the antagonistic hormone for insulin. It is a peptide hormone which is secreted by alpha cells in the pancreatic islets. Low levels of glucose in the blood act as a trigger for glucagon release and it acts on its receptors which are found on liver and muscle cells. One of the actions of this hormone is to break down glycogen stores in the liver and muscles to raise blood glucose levels.

Glucagon is a hormone formed in the pancreas which promotes the breakdown of glycogen to glucose in the liver.