ANATOMY

Detailed explanation-1: -When blood glucose levels fall too low (low blood glucose), the pancreas pumps out more glucagon. This hormone helps blood glucose rise back up in multiple ways: It causes the liver to convert stored glucose into a usable form and then release it into the bloodstream. (A process called glycogenolysis.)

Detailed explanation-2: -Glucagon is a hormone produced in the pancreas that stimulates your liver to release stored glucose into your bloodstream when your blood glucose levels are too low.

Detailed explanation-3: -The human body wants blood glucose (blood sugar) maintained in a very narrow range. Insulin and glucagon are the hormones that make this happen. Both insulin and glucagon are secreted from the pancreas, and thus are referred to as pancreatic endocrine hormones.

Detailed explanation-4: -The secretion of glucagon by pancreatic -cells plays a critical role in the regulation of glycaemia. This hormone counteracts hypoglycaemia and opposes insulin actions by stimulating hepatic glucose synthesis and mobilization, thereby increasing blood glucose concentrations.

Detailed explanation-5: -Glucagon secretion is stimulated by a fall in blood glucose level or a rise in the blood levels of free fatty acids or certain amino acids (see Table 7-8). Most of the biological consequences of glucagon lead to an increase in the blood level of glucose.