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Muscle contraction is primarily driven by the interaction between actin and myosin filaments, which is regulated by ATP hydrolysis. The process begins when ATP binds to the myosin head, causing a conformational change that reduces myosin’s affinity for actin, leading to the detachment of the myosin head from the actin filament. This step is essential to reset the cycle. Once ATP is hydrolyzed into ADP _____ ___ _______ _____ __________ _________.
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