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What is Energy in muscles is stored as: and explain in detail?
ATP is resynthesized from ADP by the addition of a phosphate group. Some of the energy for this endothermic reaction is supplied by the breakdown of glucose to CO2 and H2O, but there also exists in muscle another energy-rich phosphate compound that can supply this energy for sho periods. This compound is phosphorylcreatine, which is hydrolyzed to creatine and phosphate groups with the release of considerable energy. Ref: Ganong's Review of Medical Physiology 23rd edition, Chapter 5.