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Drag and drop the terms to the best description of terms involving the cross bridge formation. Answers may be used once or not at all. View Available Hint(s) Reset Help ATP 1. Location of higher concentration of Ca2+ needed for cross bridge formation and cycling: low-energy myosin head ADP and Pi 2. Actin status to begin cross bridge formation: actin-binding sites exposed 3. Molecule(s) bound to the myosin head at the start of the cross bridge cycle: energized/cocked myosin head 4. Energy state of myosin for beginning cross bridge formation: actin binding sites blocked cytoplasm extracellular fluid