Muscle Metabolism

Muscle Metabolism - glycogen Through the metabolic process...

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Muscle Metabolism In order for muscles to contract, ATP must be available in the muscle fiber. ATP is available from the  following sources:  Within the muscle fiber. ATP available within the muscle fiber can maintain muscle  contraction for several seconds. Creatine phosphate. Creatine phosphate, a high-energy molecule stored in muscle  cells, transfers its high-energy phosphate group to ADP to form ATP. The creatine  phosphate in muscle cells is able to generate enough ATP to maintain muscle contraction  for about 15 seconds. Glucose stored within the cell. Glucose within the cell is stored in the carbohydrate 
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Unformatted text preview: glycogen. Through the metabolic process of glycogenolysis, glycogen is broken down to release glucose. ATP is then generated from glucose by cellular respiration. • Glucose and fatty acids obtained from the bloodstream. When energy requirements are high, glucose from glycogen stored in the liver and fatty acids from fat stored in adipose cells and the liver are released into the bloodstream. Glucose and fatty acids are then absorbed from the bloodstream by muscle cells. ATP is then generated from these energy-rich molecules by cellular respiration....
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