The muscular and skeletal systems work together to provide a structural framework for movement... The combined organ systems are sometimes called the musculoskeletal system... When you want to move, signals travel from your brain to your skeletal muscle cells. The muscle cells then contract, or get shorter. Tendons connect the muscles to the bones. As muscles contract, they pull on the tendons which move the bones. Skeletal muscles often work in pairs, as the biceps and triceps of the arm.
