Upper Trapezius
Origin of upper trapezius: External occipital protuberance, a medial third of the superior nuchal line, ligament nuchae, spinous processes of 7th cervical vertebrae.
Insertion: a lateral third of the clavicle, medial side of the acromion process.
Actions: Elevates the scapula, rotates the scapula upward, retracts the scapula when contracting with other sections of the trapezius muscle.
