Rhomboid muscles

The rhomboid muscles (/ˈrɒmbɔɪd/), often simply called the rhomboids, are rhombus-shaped muscles associated with the scapula. There are two rhomboid muscles on each side of the upper back:^[1][2][3]

• Rhomboid major muscle
• Rhomboid minor muscle

Rhomboid muscle
Muscles connecting the upper extremity to the vertebral column.
Details
Origin	Nuchal ligaments, spinous processes of the C7-to-T5 vertebrae
Insertion	Medial border of the scapula
Artery	Dorsal scapular artery
Nerve	Dorsal scapular nerve
Actions	Pulls scapulae medially, rotates scapulae, holds scapulae into thorax wall
Identifiers
Latin	musculi rhomboidei
Anatomical terms of muscle [edit on Wikidata]

The large rhombus-shaped muscle, located under the trapezius muscle, in the upper part of the thoracic region of the back, and the small muscle, in the same way, participate in the movement of the scapula.^[4] Their functions are the following:^[1][2][3]

• Drawing scapula superomedially
• Supporting scapula
• Rotating glenoid cavity inferiorly

Both muscles are innervated by the dorsal scapular nerve, a branch of the brachial plexus.^[1][2][3]

Additional images

• 
  Rhomboid muscles.

    Rhomboid minor muscle

    Rhomboid major muscle
• 
  Rhomboid muscles.
• 
  Left scapula. Posterior surface.
• 
  Full back muscle flex

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