Which body system provides a framework for muscles and is the site of blood cell formation?

The skeletal system serves as the framework for the body, providing structural support that allows muscles to attach and function effectively. This system is essential for movement, as it provides the necessary leverage for muscular contractions. In addition to its role in supporting the body and facilitating movement, the skeletal system is also crucial for hematopoiesis, the process of blood cell formation. This occurs primarily in the bone marrow, which is found within certain bones in the skeleton.

By producing red blood cells, white blood cells, and platelets, the skeletal system plays a vital role in maintaining proper blood health and immune functions. This dual function of support for movement and support for blood cell formation distinguishes the skeletal system from the other systems listed.