What system is responsible for controlling movement of joints?

The correct choice highlights the musculoskeletal system as the one responsible for controlling the movement of joints. This system encompasses both the muscles and bones of the body, working together to facilitate movement. Muscles contract and relax, which generates movement, and this interaction occurs at the joints where two or more bones meet.

The musculoskeletal system not only supports the body’s structure but also enables locomotion and a wide range of movements necessary for daily activities. Additionally, it plays a role in protecting vital organs and storing minerals. In terms of movement control, the muscles pull on bones at the joints, allowing for a variety of motions such as bending, stretching, and rotating.

While the nervous system plays a crucial role in sending signals to muscles to initiate movement, it is the musculoskeletal system that carries out the actual physical movement of joints through muscle contractions. This collaboration between these two systems is essential for coordinated body movement, but specifically, the control of joint movement is primarily a function of the musculoskeletal system.

Other systems mentioned do not directly control movement at joints: the circulatory system is concerned with blood flow, and the respiratory system manages breathing processes.