the cytoskeleton is a dynamic network of filamentous proteins that extends throughout the cytoplasm forming the struts cables and girders that give the cell its shape internal organization and mechanical support for movement there are several types of protein filament each build from subunits that rapidly come together or break apart allowing the laboratories be assembled and dismantled wherever they're required by the film microtubules are stiff hollow tubes that anchor other organelles and serve as tracks that guide the movement of vehicles and other cell components actin are thin flexible filament that form cross-linked bundles and branching networks axon is particularly important for cell movement they are central to the contractile engine muscle and provide the mechanical force for cell movement at the plasma membrane [Music] you [Music]