Glycogenolysis: The formation of glycogen from glucose is

The formation of glycogen from glucose is known as glycogenesis, and the breakdown of glycogen to form glucose is called glycogen metabolism or glycogenolysis. Increased cyclic adenosine monophosphate (cAMP) catalyzes the breakdown of glycogen (glycogenolysis). Glycogenolysis is a metabolic process that converts glycogen from the muscles and liver to its monosaccharide form, glucose. Glycogen is a glucose polysaccharide stored in the muscles and liver. In the previous section, you learned that glucagon signaling down-regulates glycogen synthesis. Now, let's look at glycogen breakdown, called glycogenolysis , and its control by two hormones, glucagon and epinephrine. Only two enzymes are required for the breakdown of glycogen: the glycogen phosphorylase enzyme and the glycogen debranching enzyme. Glycogenolysis is the breakdown of the molecule glycogen into glucose, a simple sugar that the body uses to produce energy. Glycogen is essentially stored energy in the form of a long chain of glucose, and glycogenolysis takes place in muscle and liver cells when more energy needs to be produced.