True. The sequence of cross-bridge formation and myofilament movement in muscle contraction will continue to repeat as long as calcium ions and ATP are available. Calcium ions bind to troponin, leading to the exposure of binding sites on actin for myosin heads, while ATP provides the energy necessary for the cross-bridge cycle to occur.
true or false: The sequence of cross-bridge formation and myofilament movement will be repeated as long as calcium ions and ATP are present.
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