So if this is one portion of the thin filament, this is a second portion of the thin filament of the sarcomere, they basically are pulled towards each other. So these z lines, the z line number one and the z line number two basically are pulled towards each other. And so we have this motion taking place. This entire thin filament basically is pulled this way as our ADP and P basically detach from the myosin head and the myosin head is oriented once again at the 45 degree angle. So once it binds, once the myosin head binds onto the binding side, it must expel the ADP and the phosphate molecules in order to actually move the myosin head oriented at an angle of 45 degrees with respect to our thick filament. And that essentially pulls the thin filament as shown in this diagram.