Upper limb movement refers to the actions performed by the arms and hands, which include reaching, grasping, lifting, and manipulating objects. These movements are primarily controlled by the nervous system, which sends signals from the brain to the muscles in the shoulder, arm, and hand. The upper limbs consist of various joints, such as the shoulder joint, elbow, and wrist, allowing for a wide range of motion. Muscles like the biceps and triceps play crucial roles in flexing and extending the arm, while the forearm muscles enable precise hand movements essential for daily tasks.