Rhomboid minor muscle

Rhomboid minor muscle

Muscle infobox
Name = Rhomboid minor
Latin = musculus rhomboideus minor
GraySubject = 121
GrayPage = 434


Caption = Muscles connecting the upper extremity to the vertebral column. (Rhomboideus minor visible at upper center right, near shoulder.)
Origin = nuchal ligaments and spinous processes of C7 to T1 vertebrae
Insertion = medial border of the scapula, superior to the insertion of rhomboid major muscle
Blood = dorsal scapular artery
Nerve = dorsal scapular nerve (C4 and C5)
Action = Retracts the scapula and rotates it to depress the glenoid cavity. It also fixes the scapula to the thoracic wall.
Antagonist = Serratus anterior muscle
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DorlandsPre = m_22
DorlandsSuf = 12550544
The Rhomboideus minor arises from the lower part of the ligamentum nuchæ and from the spinous processes of the seventh cervical and first thoracic vertebræ.

It is inserted into the vertebral border (aka the medial border) near the point that it meets the spine of the scapula. It is usually separated from the Rhomboideus major by a slight interval, but the adjacent margins of the two muscles are occasionally united. The Rhomboideus minor is superior to the Rhomboideus major.


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