Which of the following directly blocks cross bridge interaction between actin and myosin in skeletal muscle

Question

Quizplus · Accepted Answer

Tropomyosin directly blocks the interaction between actin and myosin in skeletal muscle. When calcium ions bind to troponin, it causes a conformational change in tropomyosin that exposes the binding sites on actin, allowing for cross-bridge formation with myosin. In the absence of calcium, tropomyosin blocks the binding sites on actin, preventing cross-bridge formation.

Which of the Following Directly Blocks Cross Bridge Interaction Between