What is the primary function of the skeletal system?

The skeletal system's primary function is to provide support and protection for the body. It serves as the structural framework that supports the body's weight and shape, enabling movement in conjunction with the muscular system. Additionally, the bones protect vital organs; for example, the skull encases the brain, and the rib cage shields the heart and lungs.

In the context of the other options, facilitating digestion is primarily the role of the digestive system, which breaks down food and absorbs nutrients. Circulation of blood is managed by the cardiovascular system, primarily consisting of the heart and blood vessels. Producing hormones for growth is mainly the function of the endocrine system, particularly glands such as the pituitary and thyroid. Thus, the skeletal system distinctly fulfills its role by ensuring the body's physical integrity and supporting overall function.