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Pectoralis Major
From WikiMSK
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| Pectoralis Major | |
|---|---|
| Muscle Type | |
| Origin | Clavicular head: Anterior surface of the medial half of the clavicle
Sternal head: Anterior surface of the sternum, the costal cartilages of the upper 6 pairs of ribs, and the aponeurosis of the obliquus externus abdominis |
| Insertion | Clavicular head: Inferior crest of the greater tubercle of the humerus
Sternal head: Superior crest of the greater tubercle of the humerus |
| Action | |
| Synergists | |
| Antagonists | |
| Spinal innervation | C5, C6, C7, C8 |
| Peripheral Innervation | Medial Pectoral Nerve |
| Vasculature | |
Palpation
Anterior axillary fold
