 in animals, the muscular system helps the body move and the skeletal system gives the body structure & in eukaryotic organisms, microtubules help cells move and microfilaments give cells structure -> shapes and microfilaments in eukaryotic cocoon and the muscular measuring and skeletal sonar in people both dissociate to thwart with still and keep disorganized microtubules and microfilaments in eukaryotic organisms and the muscular system and skeletal system in animals both combine to help with movement and giving structure