Fill in the Blanks Glycogen Metabolism Online version Glycogen by kenneth thomas 1 branched blood glucagon glycogen energy glycogen glucose cytoplasm phosphorylase immediately starch UDP glucose muscle released synthesis synthase liver glycogen Glycogen is a highly molecule , also classified as a it is stored in the and cell it is used to supply when needed for demands in the muscle , the glucose is used by the muscle in the liver , the glucose is used to balance when it drops low the enzyme responsible for the storage of glycogen is the of glycogen is stimulated by insulin , which makes sense that we would store when blood glucose is high , and when glucose is high , insulin is by the islet cells to facilitate its uptake into cells . Glycogen synthesis is inhibited by . Glycogen is degraded to into glucose to supply the energy necessary for function by . The major intermediate in the reaction is - Glucos e