dictionary help| pectoralis major | medical dictionary |
<anatomy, muscle> Origin, clavicular part (pars clavicularis), medial half of clavicle; sternocostal part (pars sternocostalis), anterior surface of manubrium and body of sternum and cartilages of first to sixth ribs; abdominal part (pars abdominalis), aponeurosis of external oblique; insertion, crest of greater tubercle of humerus; action, adducts and medially rotates arm; nerve supply, anterior thoracic.
Synonyms: musculus pectoralis major, greater pectoral muscle.
(05 Mar 2000)
pectoral girdle, pectoral glands, pectoral group of axillary lymph nodes < Prev | Next > pectoralis minor, pectoralis muscles
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