Which of the myofilaments of a muscle fiber has the active sites to which the heads of the thick filaments will bind?

Question

Quizplus · Accepted Answer

The active sites on the actin myofilaments are where the heads of the myosin thick filaments bind during muscle contraction. This binding process is facilitated by the presence of troponin and tropomyosin molecules on the actin myofilament, which regulate access to the active sites. However, it is the actin myofilament itself that contains the active sites required for muscle contraction to occur.

Which of the Myofilaments of a Muscle Fiber Has the Active