Which body system forms the framework of the body and includes 206 bones?

Which body system forms the framework of the body and includes 206 bones?

• A. Nervous system
• B. Musculoskeletal system
• C. Circulatory system
• D. Endocrine system

Answer: (B)

The musculoskeletal system forms the framework of the body and includes the 206 bones that make up the adult skeleton. This framework provides structure and support for posture, protects vital organs (like the skull protecting the brain and the rib cage protecting the heart and lungs), and enables movement when muscles pull on bones across joints. Bones also store minerals and house bone marrow that produces blood cells, making this system essential for both structure and function. The other systems have important roles—nervous system manages signaling and coordination, circulatory system moves blood throughout the body, and endocrine system regulates hormones—but they do not provide the body's rigid framework built by bones and joints.

The musculoskeletal system forms the framework of the body and includes the 206 bones that make up the adult skeleton. This framework provides structure and support for posture, protects vital organs (like the skull protecting the brain and the rib cage protecting the heart and lungs), and enables movement when muscles pull on bones across joints. Bones also store minerals and house bone marrow that produces blood cells, making this system essential for both structure and function. The other systems have important roles—nervous system manages signaling and coordination, circulatory system moves blood throughout the body, and endocrine system regulates hormones—but they do not provide the body's rigid framework built by bones and joints.