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Capri October class - Dav.

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Muscle
Origin
Insertion
Action
Nerve
Errector Spinae   Medial - Spinalis Middle - Longissimus Lateral - Iliocostalis     Extension and Lateral Flexion of the spine   Spinal  
Quadratus Lumborum   Posterior Iliac Crest   Transverse Process L1-4 and the 12th Rib   Lateral flexion to the same side   Branches of the T12-L1  
Trapezius   Occiput C7-T12 Spinous Processes   Lateral 1/3 clavicle acromion processes and spine to the root of the spine   elevation upward rotation retraction depression   accessory  
Rhomboids Minor   C7-T1 Spinous Processes   Root of the spine of the scapula   retraction of the scapula   dorsal scapula  
Rhomboids Major   T2-5 Spinous Processes   Vertebral Border from the root of the spine to the inferior angle   retraction downward rotation of scapula   dorsal scapula  
Latissimus Dorsi   T6 Spinous Processes to Iliac crest and lower 3 or 4 ribs   Bicipital Groove of humerus   adduction, extension, and medial rotation of humerus   thoracordorsal  
Teres Major   inferior angle of the scapula   medial lip of the bicipital groove of the humerus   extension, medial rotation, and adduction of humerus   subscapular  
Deltoid   Lateral 1/3 clavicle, acromion, spine of the scapula   deltiod tuberosity   abduction. flexion, extension, medial and lateral rotation of humerus   axillary  
Supraspinatus   Supraspinous Fossa of the scapula   upper part of the greater tubercle of the humerus   abduction of humerus, draws humerus toward glenoid fossa   supra-scapular  
Infraspinatus   Infraspinous fossa of the scapula   middle portion of the greater tubercle of the humerus   lateral rotation and horizontal abduction of humerus   supra-scapular  
Teres Minor   Upper axillary border of the scapula   lower portion of the greater tubercle on the humerus   lateral rotation of humerus   axillary  
Subscapularis   Subscapular fossa of the scapula   lesser tubercle of the humerus   medial rotation of humerus   subscapularis  
Levator Scapulae   C1-C4   Vertebral border of scapula between superior angle and spine   Bilateral-extends the head and neck Laterally- flexes head and neck and rotates head and neck   Dorsal Scapular  


   


 

 

 
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