Kaplan Nursing Entrance Practice Exam

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

Support and structure
Blood cell production
Energy storage
Hormone production

The correct answer is: Energy storage

The skeletal system serves several vital functions in the body, and understanding these roles clarifies why energy storage is not one of them. The primary functions of the skeletal system include support and structure, where bones provide the framework for the body and maintain its shape; blood cell production, which occurs in the bone marrow where red and white blood cells are generated; and hormone production, notably in the production of osteocalcin, which plays a role in regulating blood sugar and fat deposition. Energy storage, on the other hand, is primarily associated with adipose tissue (fat) rather than the skeletal system. While bones can store certain minerals, such as calcium and phosphorus, they do not function as a major energy reserve. Therefore, it is accurate to say that energy storage is not a fundamental role of the skeletal system, distinguishing it from the other functions listed.