Sarcoplasm
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Sarcoplasm is the cytoplasm of a muscle cell. It is comparable to the cytoplasm of other cells, but it contains unusually large amounts of glycogen, myoglobin, a red-colored protein necessary for bind
Sarcoplasm shown with a muscle fiber
Bioenergetic systems
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Bioenergetic systems are metabolic processes that relate to the flow of energy in living organisms. Those processes convert energy into adenosine triphosphate, which is the form suitable for muscular
(A) Phosphocreatine, which is stored in muscle cells, contains a high energy bond. (B) When creatine phosphate is broken down during muscular contraction, energy is released and utilized to resynthesize ATP.
Phosphagen system (ATP-PCr) and purine nucleotide cycle (PNC)