Audio LecturePro Feature Rhomboid Major 0:00 / 0:00 1x 0.25x 0.5x 0.75x 1x 1.25x 1.5x 1.75x 2x 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 (2026) Fig 1The superficial muscles of the back 3D ModelPro Feature 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 Dissection AtlasPro Feature 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 In gratitude to our body donorsLearn more In gratitude to our body donors We are deeply grateful to the individuals who chose to donate their bodies for the advancement of medical education. Their generosity makes these images possible and provides students and healthcare professionals with an invaluable opportunity to study human anatomy. We recognise the profound contribution made by each donor and their families, and we use these images with the dignity and respect their gift deserves. Acknowledge Frequent questions What is the rhomboid major muscle? The rhomboid major is an extrinsic muscle of the shoulder that plays a key role in scapular movement. It is situated deep to the trapezius muscle and inferior to the rhomboid minor. Where does the rhomboid major originate and attach? The rhomboid major originates from the spinous processes of the T2 to T5 vertebrae and attaches to the medial border of the scapula, specifically between the scapular spine and the inferior angle. What actions does the rhomboid major perform? The rhomboid major primarily functions to retract and rotate the scapula. These actions are essential for proper shoulder movement and stability. How is the rhomboid major innervated? The rhomboid major is innervated by the dorsal scapular nerve, which provides the necessary motor signals for its contraction and function. What is the blood supply for the rhomboid major muscle? The rhomboid major receives its blood supply from the dorsal scapular artery, ensuring that the muscle has the necessary nutrients and oxygen for optimal performance. Rate This Article