Protects and supports body organs, and provides a framework the muscles use to cause movement. Blood cells are formed within bones. Bones store minerals. Which system is described?

• A. Skeletal system
• B. Muscular system
• C. Cardiovascular system
• D. Integumentary system

Answer: (A)

The skeletal system. It provides support and protection for body organs, with bones shielding the brain, heart, lungs, and spinal cord. It offers the framework that muscles pull against to produce movement, functioning as levers at joints. Inside bones, bone marrow forms blood cells, and bone tissue stores minerals like calcium and phosphorus, releasing them as needed. These combined roles—support and protection, movement framework, blood cell production, and mineral storage—define the skeletal system.