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Levator Scapula

 


origin: transverse process of 1st 4 cervical vertebrae
insertion: vertebral border of scapula between superior medial angle and scapular spine;
action: elevates scapula to inferiorly rotate glenoid cavity; working with the upper Trapezius , elevates and adducts scapula;
reversed origin insertion action: when scapula is fixed, laterally flexes and slightly rotates cervical spine;
nerve supply: dorsal scapula, C3, C4, C5;
synergists: rhomboid and Trapezius