The rhomboid major muscle is one of the superficial muscles of the back. The superficial group of back muscles attach the axial skeleton to the upper part of the appendicular skeleton, and may also be referred to as the appendicular group of back muscles.
The superficial group of back muscles includes the following muscles:
- Trapezius
- Latissimus dorsi
- Rhomboid major
- Rhomboid minor
- Levator scapulae
Origin
- Spinous processes of T2-5
Insertion
- Medial border of scapula: between spine and inferior angle
Action
- Retracts scapula
- Elevates scapula
Innervation
- Dorsal scapular nerve: C4,C5
Blood Supply
Dorsal scapula artery