What occurs during the 'power stroke' phase of the sliding filament mechanism?
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Correct answer: The myosin head pivots after releasing ADP and phosphate, pulling the actin filament
After a cross-bridge forms, the release of stored energy from the previous ATP hydrolysis causes the myosin head to bend toward the M-line. This movement slides the thin filament over the thick filament, shortening the sarcomere.
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