The rhomboid major is an extrinsic muscle of the shoulder. It is located deep to the trapezius, and inferior to the rhomboid minor. Attachments: Originates from the spinous processes of T2-T5 vertebrae. Attaches to the medial border of the scapula, between the scapula spine and inferior angle. Actions: Retracts and rotates the scapula. Innervation: Dorsal scapular nerve. Blood Supply: Dorsal scapular artery By TeachMeSeries Ltd (2025) Fig 1The superficial muscles of the back Pro Feature - 3D Model You've Discovered a Pro Feature Access our 3D Model Library Explore, cut, dissect, annotate and manipulate our 3D models to visualise anatomy in a dynamic, interactive way. Learn More Pro Feature - Dissection Images The superficial and intermediate muscles of the back The superficial and intermediate muscles of the back You've Discovered a Pro Feature Access our Dissection Image Library Enhance your understanding with high-resolution dissection images showcasing real-life anatomy. Learn More Print Article Rate This Article