Question

can anyone explain how cross bridge formation takes place??​

Answer 1

A single cross-bridge cycle consists of four basic stages. First, myosin binds actin, forming the high-energy/attached state. The power stroke occurs when myosin changes its shape, pulling the thin filaments towards the middle of the sarcomere - that's what causes sarcomere shortening in muscular contraction.

Answer 2

Cross-bridge formation occurs when the myosin head attaches to the actin while adenosine diphosphate (ADP) and inorganic phosphate (Pi) are still bound to myosin.