And as this is released, that causes the change in orientation of the mycin head. The myosin head once again goes from a 90 degree angle to about a 45 degree angle. And as that takes place, that moves our thin filaments towards each other. 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.