Rhomboid major muscle

Rhomboid major
Muscles connecting the upper extremity to the vertebral column. Rhomboid major indicated in red.
Details
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 (C5)
Actions	Retracts the scapula and rotates it to depress the glenoid cavity. It also fixes the scapula to the thoracic wall.
Antagonist	Serratus anterior muscle
Identifiers
Latin	musculus rhomboideus major
TA98	A04.3.01.007
TA2	2232
FMA	13379
Anatomical terms of muscle [edit on Wikidata]

The rhomboid major is a skeletal muscle of the back that connects the scapula with the vertebrae of the spinal column.^[1] It originates from the spinous processes of the thoracic vertebrae T2–T5 and supraspinous ligament; it inserts onto the lower portion of the medial border of the scapula.^[2] It acts together with the rhomboid minor to keep the scapula pressed against thoracic wall and to retract the scapula toward the vertebral column.^[1]

As the word rhomboid suggests, the rhomboid major is diamond-shaped. The major in its name indicates that it is the larger of the two rhomboids.^{[citation needed]}