
Actions of Trapezius Muscle: Upper trapezius: elevation and upward rotation of the scapula Middle trapezius: retraction of the scapula Lower trapezius: depression and upward rotation of the scapula Origin of Trapezius Muscle: External occipital protuberance Ligamentum nuchae Spinous processes of C7 to T12 Insertion of Trapezius Muscle: Upper trapezius: lateral clavicle and acromion Middle trapezius:





