Question

How does the enzyme present in the globular myosin head play its role during muscle contraction?​

Answer 1

Answer:

When muscle contracts, the globular heads of the thick myosin filaments attach to the binding sites on the thin actin filaments and pull them toward each other. ... The calcium ions bind to the troponin, changing the shape of the troponin-tropomyosin complex such that the actin binding sites are uncovered.