Muscles of UE (1of 7)
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20 terms
Terms | Definitions |
|---|---|
 Pectoralis Major -origin | Clavicle: medial half (anterior); Sternum: sternocostal head from anterior sternum; superior six costal cartilage; aponeurosis of external oblique ms. |
| Pectoralis Major -insertion | Intertubercular groove of humerus: lateral lip |
| Pectoralis Major -innervation | Pectoral nerves, lateral and medial (C5-T1) |
| Pectoralis Major -action | Flexion, adduction, medial rotation of shoulder |
| Pectoralis Major -relationship | Deltopectoral triangle(f6.15); anterior axillary wall |
| Pectoralis Minor- origin | Ribs 3-5 |
| Pectoralis Minor- insertion | Coracoid process of scapula |
| Pectoralis Minor- innervation | Pectoral nerves, medial (C8-T1) |
| Pectoralis Minor- action | Stabilizes scapula, forced inspiration, anterior tilt of scapula |
| Pectoralis Minor- relationship | Deep to pec major, used as ms of forced inspiration, forms a bridge under which many axillary structures pass |
| Subclavius- origin | 1st rib |
| Subclavius- insertion | Clavicle: inferior middle third surface |
| Subclavius- innervation | Nerve to subclavius (C5-C6) |
| Subclavius- action | Stabilizes and depresses clavicle, draws clavicle medially |
| Subclavius- relationship | Protects subclavian artery |
| Serratus Anterior- origin | ribs 1-9 |
| Serratus Anterior- insertion | Scapula: anterior surface, medial border |
| Serratus Anterior- innervation | Long Thoracic Nerve (C5-C7) |
| Serratus Anterior- action | Protraction and upward rotation of scapula (Boxer's ms) |
| Serratus Anterior- relationship | Nerve damage causes "winged scapula" |
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