Acute injury, overuse (wear and tear), and underlying conditions affecting arm bones, muscles, joints, tendons, or other connective tissues can cause pain and discomfort anywhere from your ...

The rotator cuff is a group of muscles and tendons that keep your upper arm bone (humerus) in the shoulder socket. Tissues of the rotator cuff can become diseased due to overuse or injury ...

For example, in your arm, your biceps and triceps are antagonistic ... such as the stomach lining. Skeletal muscle is joined to bones. Its cells contract to make bones move and joints bend.

PRESENTER:Muscles and bones keep us moving 24 hours-a-day ... For example, our elbow joint in the arm has two muscles, to move your forearm up and down. these are the biceps that pull your ...