Which system consists of the bones and skeletal muscles that support and protect the body and permit movement?

• A. Musculoskeletal system
• B. Nervous system
• C. Respiratory system
• D. Integumentary system

Answer: (A)

The system that includes bones as the framework and skeletal muscles that pull on those bones to move is the musculoskeletal system. Bones provide structure, protect internal organs, and help support posture. Skeletal muscles attach to bones and contract to generate movement at the joints, with tendons linking muscle to bone and nerves coordinating the action. This combination allows both support and deliberate movement of the body. The nervous system, while essential for controlling and coordinating movement, isn’t defined by bones and muscles alone. The respiratory system handles breathing, bringing in oxygen and removing carbon dioxide. The integumentary system covers the skin and related structures, protecting the body from the environment.