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Origins Insertions And Actions Of Muscles

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azeeeeezat's version from 2015-12-21 21:07

Origins Insertions And Actions of Muscles of the Shoulder

 

MuscleOriginInsertionAction
TrapeziusOccipital bone, Spinous process of C7-T12Clavical, Acromium and Spine of the scapulaeElevates, depress, retract, adduct & rotate scapulae, elevate clavicle
Levator ScapulaeTransverse processes of C1-C4medial border of scapulaeElevates scapulae
Rhomboideus MajorSpinous Process of T2-T5Medial border of scapulaeRetracts & elevates scapulae
Rhomboideus MinorSpinous Processes of C7-T1Medial Border of scapulaRetracts and Elevates Scapulae
Serratus AnteriorUpper Lateral aspect of upper 8-9 ribsmedial border of scapulaeprotract and stabilize scapula, assists in downward movement of glenoid cavity
Pectoralis Majorsternum and claviclebicipital groove of greater tubercleadducts humerus, medially rotates humerus, flexion of the arm from extension (clavicular portion)
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