place the following in order (1-11):
Myosin heads bind to active sites on actin molecules
ATP is hydrolyzed
Myosin heads return to their high-energy shape(******), ready for the next working stroke
Calcium ions bind to troponin
Cycling continues until calcium ions are sequestered by the SR
Myosin cross bridges detach from actin
Troponin changes shape
ADP & Pi(inorganic phosphate) are released from the thick filament
Myosin heads pull on the thin filaments(working stroke) & slide them toward the center of sarcomere
ATP binds to thick filament
Tropomyosin is moved into the groove between the F-actin strands exposing active sites on actin