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14 Cards in this Set
- Front
- Back
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Anterior Thorax - Pectoralis Minor |
- Beneath pectoralis major. - O = Anterior surface of ribs 3-5 - I = Coracoid process - Draw scapula forward and downward |
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Anterior Thorax - Serratus anterior |
- Fan-shaped, deep to scapula, inferior to pectoral muscles. - O = Series of muscle slips from ribs 1-8. - I = Anterior surface of vertebral border of scapula - Rotates scapula so its inferior angle moves laterally and upward. Abduct and raises arm. "Boxer's Muscle" |
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Anterior Thorax - Subclavis |
- Cylindrical muscle from rib 1 to clavicle. - O = Costal cartilage of rib 1 - I = Inferior surface of clavicle. - Stabilize and depress pectoral girdle |
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Posterior Thorax - Levator Scapulae |
- Back and side of neck, deep to trapezius, straplike. - O = Transverse process C1-C4. - I = Medial border of scapula. - Elevates, adducts scapula. |
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Posterior Thorax - Rhomboids (minor and major) |
- Diamond-shaped muscles, deep to trapezius, inferior to levator scapulae. - O = Spinois process of C7 and T1 (minor) and T2-T5 (major) - I = Medial border of scapula - Stabilize scapula, squares shoulders, |
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Shoulder - Latissimus dorsi |
- Triangular muscle of lower back, superficial origins. Superiorly covered by trapezius. - O = Lower 6 thoracic, lumbar, lower 3-4 ribs, iliac crest - I = Spirals around teres major - Prime mover of arm extension, arm adductor, medially rotates arm at shoulder. |
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Shoulder - Subscapularis |
- Rotator cuff muscle, tendon of insertion passes in front of shoulder joint. - O = Subscapular fossa - I = Lesser tubercle of humerus - Chief medial rotator of arm, helps hold head of humerus in glenoid cavity |
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Shoulder - Pectoralis major |
- Fan-shaped muscle, cover superior portion of chest. - O = sternal end of clavicle - I = Intertubercular sulcus and greater tubercle - Adducts and medially rotates arm, |
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Shoulder - Deltoid |
- Multipennate, rounded shoulder mass. - O = Trapezius, lateral third of clavicle, acromion and scapula spine. - I = Deltoid tuberosity - Prime mover of arm abduction when all fibers contract simultaneously. |
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Shoulder - Supraspinatus |
- Posterior to scapula, deep to trapezius, rotator cuff muscle. - O = Supraspinous fossa - I = Greater tubercle of humerus - Initiates abduction of arm, stabilizes shoulder joint. |
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Shoulder - Infraspinatus |
- Partially covered by deltoid and trapezius, rotator cuff muscle - O = Infraspinous fossa of scapula - I = Greater tubercle of humerus - Rotates arm laterally, holds head in glenoid fossa |
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Shoulder - Teres minor |
- Small, inferior to infraspinatus, rotator cuff muscle. - O = Lateral border of scapular surface - I = Greater tubercle of humerus - Same as infraspinatus |
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Shoulder - Teres major |
- Thick, inferior to teres minor. - O = Posterior surface of scapula at inferior edge - I = Crest of lesser tubercle on anterior humerus - Extends, medially rotates and adducts arm |
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Shoulder - Coracobrachialis |
- Cylindrical muscle - O = Coracoid process - I = Medial surface of humeral shaft - Flexes and adducts arm |
