They partially envelop the levator scapulae inferiorly. Rhomboid minor is a small, cylindrical muscle that consists of two layers dorsal and ventral.
Scapulothoracic joint: Draws scapula superomedially, Rotates glenoid cavity inferiorly Supports position of scapulaĭorsal scapular artery, deep branch of transverse cervical artery, dorsal branch of upper five or six posterior intercostal arteries Rhomboid major: Medial border of scapula (from inferior angle to root of spine of scapula) Rhomboid minor: Root (medial end) of spine of scapula Rhomboid major: Spinous process of vertebrae T2-T5 Rhomboid minor: Nuchal ligament, Spinous processes of vertebrae C7-T1 Key facts about the rhomboid muscles Origin This article will discuss the anatomy and function of the rhomboid muscles. Therefore, the rhomboids are important to stabilize the scapula into position and reinforce the shoulder.
Under innervation from the dorsal scapular nerve, the rhomboids primarily retract the scapulasuperomedially and rotate the glenoid cavity. The rhomboid muscles extend between the nuchal ligament, spinous processes of thoracic vertebrae and scapula. Together with trapezius, levator scapulae and latissimus dorsi, they comprise the superficial layer of the extrinsic back muscles. They consist of two functionally similar muscles called rhomboid minor and rhomboid major. The rhomboids are two bilateral, superficial muscles located in the upper back.
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