rhomboid major muscle

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rhom·boid ma·jor mus·cle

(rŏm'boyd mā'jŏr mŭs'ĕl)
Thoracoappendicular muscle; origin, spinous processes and corresponding supraspinous ligaments of first four thoracic vertebrae; insertion, medial border of scapula below spine; action, draws scapula toward vertebral column; nerve supply, dorsal nerve of scapula.
Synonym(s): greater rhomboid muscle, musculus rhomboideus major.
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