17. Detachment Sliding Binding Ca 2+ Troponin Actin Myosin Tropomyosin Ca 2+ Myosin binding sites Ca 2+ Ca 2+
18.
19. Ca ++ Troponin Actin Myosin ATP Ca ++ binds to troponin Tropomyosin exposes actin myosin head binds to actin & cross bridge forms Filaments slide ATP is broken down New ATP comes, Ca is removed, ready to detach