The rate of glycogen breakdown is a muscle preparation containing glycogen phosphorylase is treated with (a) phosphorylase kinase increases and ATP; (b) PP1 decreases; (c) epinephrine increases.
Glycogen
In animals, fungi, and bacteria, glycogen is a multibranched polysaccharide of glucose that acts as a source of energy storage. The primary form of glucose storage in the body is represented by the polysaccharide structure.
One of two types of energy reserves, glycogen is used for short-term storage, while the other type is triglyceride storage in adipose tissue (body fat), which is used for long-term storage. Glycogen is predominantly produced and stored in the liver and skeletal muscle cells of humans. Glycogen can account for 5–6% of the liver's fresh weight, and an adult liver weighing 1.5 kg can hold about 100–120 grams of glycogen.
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