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

• A. Support and protection of organs
• B. Production of blood cells
• C. Storage of minerals
• D. Regulation of body temperature

Answer: (D)

Verified step by step guidance

1. Understand the primary functions of the skeletal system: The skeletal system provides structural support for the body, protects vital organs (e.g., the skull protects the brain, and the ribcage protects the heart and lungs), facilitates movement by serving as attachment points for muscles, stores essential minerals like calcium and phosphorus, and produces blood cells in the bone marrow (a process called hematopoiesis).
2. Analyze the given options: Review each option to determine whether it aligns with the known functions of the skeletal system. For example, 'Support and protection of organs' and 'Production of blood cells' are well-documented functions of the skeletal system.
3. Evaluate the option 'Storage of minerals': This is also a key function of the skeletal system, as bones act as reservoirs for minerals like calcium and phosphorus, which can be released into the bloodstream as needed.
4. Consider the option 'Regulation of body temperature': This is not a function of the skeletal system. Body temperature regulation is primarily managed by the integumentary system (skin), circulatory system, and hypothalamus in the brain.
5. Conclude that the correct answer is 'Regulation of body temperature,' as it does not align with the primary functions of the skeletal system.