9. The binding of the myosin head to the free binding site of the actin filament results in the contraction of the muscle. Which of the following will NOT result in the attachment of the myosin head to the actin filament? ○ High-energy configuration of the myosin head Binding of calcium ions to the protein complex in the actin filament Binding of ATP to myosin head Hydrolysis of bound ATP to the myosin head

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Muscle Action

A change in the body or a bodily organ as a result of its functioning is referred to as an action. Muscle action can be defined as the specific movement of a bodily part generated by the contraction of a muscle. The muscle proteins actin and myosin are the important contractile proteins involved in muscle action. Muscle contraction, in addition to movement, serves several other important functions in the body, including posture, heat generation, and joint stability. Muscle contraction maintains posture, which includes standing and sitting.