Rhomboid major muscle
| Rhomboid major | ||
|---|---|---|
 |
||
| Muscles connecting the upper extremity to the vertebral column. (Rhomboideus major visible at upper center right, near shoulder.) | ||
| Latin | musculus rhomboideus major | |
| Gray's | subject #121 434 | |
| Origin: | spinous processes of the T2 to T5 vertebrae | |
| Insertion: | medial border of the scapula, inferior to the insertion of rhomboid minor muscle | |
| Artery: | dorsal scapular artery | |
| Nerve: | dorsal scapular nerve (C4 and C5) | |
| Action: | Retracts the |
|
| Antagonist: | Serratus anterior muscle | |
| Dorlands/Elsevier | m_22/12550536 | |
The rhomboid major is a muscle on the back that connects the
Structure
The rhomboid major arises from the spinous processes of the thoracic vertebrae T2 to T5 as well as the supraspinous ligament. It inserts on the medial border of the scapula, from about the level of the scapular spine to the scapula's inferior angle.
The rhomboid major is considered a superficial back muscle. It is deep to the
Innervation
The rhomboid major, like the rhomboid minor, is innervated by the dorsal scapular nerve (C5).
Actions
The rhomboid major helps to hold the scapula (and thus the upper limb) onto the ribcage. It also acts to retract the scapula, pulling it towards the vertebral column.
Additional images
 Left scapula. Dorsal surface. |
 The scapular and circumflex arteries. |
 Surface anatomy of the back. |
See also
- Rhomboid minor
Trapezius - Latissimus dorsi
- Levator scapulae
External links
- Template:Gray's
- UWASH rhomboids
- 188022862 at GPnotebook
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