Cross Bridge Cycle
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Last updated 11:32 PM on 3/15/26
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6 Terms
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cross bridge
connection formed when a myosin head binds to actin
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Binding
step where the energized myosin head attaches to actin
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Power Stroke
Myosin head bends, pulling the thin filament toward the center of the sarcomere
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Detachment
ATP binds to myosin, causing it to release actin
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Reactivation (Reset)
ATP is hydrolyzed, energizing the myosin head for another cycle
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Rigor Mortis
Post death muscle stiffness caused by a lack of ATP, preventing cross-bridge detachment
