ANATOMY

Detailed explanation-1: -Glucagon stimulates the breakdown of glycogen in the liver to glucose. Thus it raises the sugar level in the blood.

Detailed explanation-2: -Glucagon’s role in the body is to prevent blood glucose levels dropping too low. To do this, it acts on the liver in several ways: It stimulates the conversion of stored glycogen (stored in the liver) to glucose, which can be released into the bloodstream. This process is called glycogenolysis.

Detailed explanation-3: -The major factor that controls glycogen metabolism in the liver is the concentration of phorphorylase alpha. Indeed, this enzyme catalyzes the limiting step of glycogen breakdown and, by controlling the activity of synthetase phosphatase, also regulates glycogen synthesis.

Detailed explanation-4: -Glycogenesis is stimulated by the hormone insulin. Insulin facilitates the uptake of glucose into muscle cells, though it is not required for the transport of glucose into liver cells.

Detailed explanation-5: -Glucagon Stimulates Break-Down of Fatty Acids and Inhibits Lipogenesis in the Liver. Glucagon promotes formation of non-carbohydrate energy sources in the form of lipids and ketone bodies.