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

• A. Providing a mechanism for movement with muscles
• B. Storing calcium
• C. Protecting vital organs
• D. Digesting food

Answer: (D)

Movement relies on bones providing a rigid framework and acting as levers with muscles attached, allowing the body to move. The skeletal system also stores calcium and minerals and releases them to help regulate blood calcium and maintain bone strength. It protects vital organs by enclosing them in bony cavities, such as the skull for the brain and the rib cage for the heart and lungs. Digesting food, however, is a function of the digestive system, which uses the GI tract and enzymes to break down nutrients. So the statement about digesting food is not a function of the skeletal system.