What specific event triggers the uncovering of the myosin binding site on actin? Calcium release channels open in the sarcoplasmic reticulum, and calcium levels rise in the sarcoplasm. Sodium ions bind to troponin and change its shape. Calcium ions bind to troponin and change its shape. Calcium ions bind to tropomyosin and change its shape.
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What specific event triggers the uncovering of the myosin binding site on actin?
Calcium release channels open in the sarcoplasmic reticulum, and calcium levels rise in the sarcoplasm.
Sodium ions bind to troponin and change its shape.
Calcium ions bind to troponin and change its shape.
Calcium ions bind to tropomyosin and change its shape.
