Drag the labels to their appropriate locations on the diagram below, indicating the function of each structure during muscle contraction filament that is pulled toward the center of the sarcomere protein that controls access to motor protein binding sites sites at which Ca2* ions are bound binding site for motor protein head filament that pulls the other filament toward the center of the sarcormère motor protein head that hydrolyzes ATP and drives contraction Adapted from Biology by Campbell and Reece 2008 Pearson Education