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9 Cards in this Set
- Front
- Back
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Pectoralis Major
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flexes, adducts, and medially rotates humerus
Origin body of sternum cartilage of 2 to 6 ribs aponeurosis of external oblique medial half of clavicle Insertion greater tubercle of humerus and lateral lip of bicipital groove of humerus |
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Deltoid
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Anterior: flexes arm and medially rotates shoulder joint
Middle: abducts arm Posterior: extends arm and laterally rotates shoulder joint Origin Anterior: lateral third of clavicle Middle: acromion process Posterior: spine of scapula Insertion deltoid tuberosity of humerus |
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Coracobrachialis
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adducts and flexes arm
stabilizes humerus Origin coracoid process of scapula Insertion middle third of medial margin of humerus |
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Subscapularis
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medially rotates humerus
stabilizes shoulder joint Origin subscapular fossa of scapula Insertion lesser tubercle of humerus |
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Supraspinatus
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abducts arm
stabilizes shoulder join Origin supraspinous fossa of scapula Insertion greater tubercle of humerus |
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Infraspinatus
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laterally rotates humerus
stabilizes shoulder joint Origin infraspinous fossa of scapula Insertion greater tubercle of humerus |
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Teres Major
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medially rotates humerus
adducts arm extends shoulder Origin lower third of lateral border and inferior angle of scapula Insertion medial lip of intertubercular groove of humerus |
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Teres Minor
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laterally rotates humerus
adducts arm stabilizes shoulder joint Origin upper two thirds of lateral border of scapula Insertion greater tubercle of humerus |
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Latissimus Dorsi
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Unilaterally: extends, adducts, medially rotates arm; depresses shoulder girdle
Originspinous processes of lower six thoracic vertebrae and lumbar vertebraethoracolumbar fascia8 to 12 ribsinferior angle of scapula Insertionfloor or bicipital groove |
