Which of the following is NOT a function of the skeletal system?

The skeletal system has several key functions essential to maintaining the body's overall structure and function. Providing structural support is one of the primary roles of the skeletal system, as it forms the framework that supports the body's mass and shape. This support is crucial for stability and form, allowing the body to maintain its posture and position.

Another essential function is protection; the skeletal system encases and safeguards vital internal organs. For example, the skull protects the brain, and the rib cage shields the heart and lungs from physical trauma.

Facilitating movement is also a significant role of the skeletal system. Bones serve as levers that muscles pull on to create motion. The connections between bones at joints allow for a wide range of movement.

Producing hormones, however, is not a standard function of the skeletal system. While bone tissue can have roles in hormone production, such as producing osteocalcin, which helps regulate energy metabolism and the body's fat storage, it is not typically classified as a primary function of the skeletal system compared to the other roles. This distinction makes it the correct choice for the question regarding which function is not characteristic of the skeletal system.