ANATOMY

Detailed explanation-1: -Once the available ATP is used up, which occurs in a few seconds, a molecule called phosphocreatine is used to re-form ATP in the muscle.

Detailed explanation-2: -In the process of regeneration of ATP, creatine phosphate transfers a high-energy phosphate to ADP. The products of this reaction are ATP and creatine.

Detailed explanation-3: -Creatine-P helps maintain a constant concentration of ATP in muscle during sudden bursts or exercise that would otherwise deplete ATP concentration in the cell.

Detailed explanation-4: -Abstract. THE hydrolysis of ATP provides the energy source for muscular contraction. ATP is either stored in the muscle or produced by phosphorylation of ADP by creatine phosphate or glycolytic processes, or through oxidative processes in the mitochondria.