When cross-bridges form and the muscle fiber... When cross-bridges form and the muscle fibers contract, the actin filament slides past the myosin filament. True or False True False
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Cross-bridges form between actin and myosin filaments. Show more…
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All types of muscle contain actin and myosin myofilaments. True or false. Each myosin protein has a globular head that extends outward from the myosin filament. True or false. Unflexing of the myosin head requires ATP. True or false.
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