Which organ system is responsible for supporting and protecting the body?

The skeletal system is responsible for supporting and protecting the body. It consists of bones, cartilages, ligaments, and joints, all of which work together to provide structure and stability. The bones form a framework that supports the body's shape, allowing us to stand upright and move. Additionally, the skeletal system protects vital organs; for example, the skull encases the brain, and the rib cage shields the heart and lungs from injury.

The other systems listed do not primarily focus on providing structural support or protection. The nervous system primarily manages communication and coordination throughout the body. The muscular system is involved in movement but relies on the skeletal system for structure and leverage. The circulatory system, while vital for transporting blood and nutrients, does not play a role in supporting or protecting the body physically. Thus, the skeletal system is uniquely designed for these critical functions.