What causes myosin heads to grab actin and pull it inwards

Last updated: 7/29/2022

What causes myosin heads to grab actin and pull it inwards during the cross-bridge cycle of skeletal muscle contraction? Choose the best answer. ATP hydrolysis pulls back the Myosin heads into the cocked position Calcium binds to Troponin which rotates Tropomyosin When Tropomyosin rotates it exposes the myosin-binding sites on Actin All of the above