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14 Cards in this Set
- Front
- Back
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Trapezius |
Origin: sup. nuchal line, ext. occipital protuberance, ligamentum nuchae, spinous processes of CV VII to TV XII Insertion: lateral 1/3 of clavicle, acromion, spine of scapula Innervation: CN XI Action: rotates, elevates, retracts, and depresses scapula |
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Latissimus dorsi |
Origin: spinous processes of TV VI to LV V and sacrum, iliac crest, and ribs X to XII Insertion: intertubercular groove/sulcus Innervation: thoracodorsal n. Action: extends, adducts, and medially rotates humerus |
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Levator scapulae |
Origin: transverse processes of CV I-IV Insertion: superior angle of scapula Innervation: dorsal scapular n. Action: elevates and rotates scapula |
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Rhomboid major and minor |
Origin: spinious processes of CV VII to TV V Insertion: medial border of scapula Innervation: dorsal scapular n. Action: retracts, elevates, and rotates scapula |
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Deltoid |
Origin: spine of scapula, acromion, lateral 1/3 of clavicle Insertion: deltoid tuberosity Innervation: axillary n. Action: abduct, flex, and extend arm; medial and lateral rotation |
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Supraspinatus |
Origin: supraspinous fossa Insertion: superior facet of greater tubercle Innervation: suprascapular n. Action: arm abduction |
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Infraspinatus |
Origin: infraspinous fossa
Insertion: middle facet of greater tubercle Innervation: suprascapular n. Action: lateral rotation of arm |
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Teres major |
Origin: lateral scapular border superior to inferior angle Insertion: medial lip of intertubercular sulcus (crest of lesser tubercle) Innervation: lower subscapular n. Action: medial rotation and adduction of arm; extension of flexed arm |
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Long head triceps brachii |
Origin: infraglenoid tubercle of scapula Insertion: olecranon process via common tendon Innervation: radial n. Action: forearm extension |
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Subscapularis |
Origin: subscapular fossa Insertion: lesser tubercle of humerus Innervation: upper and lower subscapular nn. Action: medial rotation of arm |
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Pectoralis major |
Origin: medial 1/2 of clavicle, anterior surface of sternum Insertion: lateral lip of intertubercular sulcus (crest of greater tubercle) Innervation: medial and lateral pectoral nn. Action: flexion, adduction, and medial rotation of arm |
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Pectoralis minor |
Origin: ribs 3-5 Insertion: coracoid process Innervation: medial pectoral n. Action: pulls tip of shoulder down and protracts scapula |
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Subclavius |
Origin: rib 1 Insertion: inferior surface of clavicle Innervation: n. to subclavius Action: pulls tip of shoulder down, pulls clavicle medially to stabilize sternoclavicular joint |
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Serratus anterior |
Origin: lateral surface of upper 8-9 ribs Insertion: costal surface of medial scapular border Innervation: long thoracic n. Action: protraction, rotation, and depression of scapula |
