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Spinal accessory nerve cranial nerve xi the ventral rami of spinal nerves c2 c3 c4. Retraction of the scapula. The Trapezius Muscle Yoganatomy The trapezius inserts on the lateral third of the clavicle as well as the acromion and scapular spine of the scapula. Trapezius origin and insertion and…

Attachments of trapezius muscle. Learn the anatomy of the trapezius muscle faster with. Muscles Of The Neck 1 Spinal accessory nerve cranial nerve xi the ventral rami of spinal nerves c2 c3 c4. Trapezius origin and insertion . Retraction of the scapula. The trapezius inserts on the lateral thir…