Here's why:
* Muscles: Muscles are the primary movers. They contract and relax, pulling on bones to create movement.
* Skeletal System: The skeletal system provides the framework and structure for muscles to attach to and leverage against.
* Nervous System: The nervous system sends signals from the brain to the muscles, telling them when and how to contract.
While the muscular system is the primary mover, the nervous system and skeletal system are essential collaborators for movement to occur.