Definition of Pectoralis major

1. Noun. A skeletal muscle that adducts and rotates the arm.

Definition of Pectoralis major

1. Noun. The large muscle that covers the chest and ribs. ¹

¹ Source:

Medical Definition of Pectoralis major

1. 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. Synonym: musculus pectoralis major, greater pectoral muscle. (05 Mar 2000)

Pectoralis Major Pictures

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Lexicographical Neighbors of Pectoralis Major

pectoral girdle
pectoral girdles
pectoral glands
pectoral group of axillary lymph nodes
pectoral medallion
pectoral muscle
pectoral muscles
pectoral reflex
pectoral region
pectoral ridge
pectoral sandpiper
pectoral vein
pectoral veins
pectoralis major (current term)
pectoralis majors
pectoralis minor
pectoralis muscles
pectorodorsal muscle
pectorodorsalis muscle

Literary usage of Pectoralis major

Below you will find example usage of this term as found in modern and/or classical literature:

1. Anatomy, Descriptive and Surgical by Henry Gray (1901)
"The pectoralis major (Fig. 229) is a broad, thick, triangular muscle, situated at the upper and fore part of the chest, in front of the axilla. ..."

2. Anatomy, Descriptive and Applied by Henry Gray (1913)
"It is very thin over the upper part of the pectoralis major, but thicker in the ... As the fascia leaves the lower edge of the pectoralis major to cross ..."

3. Journal of Nervous and Mental Disease by American Neurological Association, Philadelphia Neurological Society, Chicago Neurological Society, New York Neurological Association, Boston Society of Psychiatry and Neurology (1920)
"Phylogenetically the clavicular head of the pectoralis major is present only in the ... In animals that have no clavicular head to the pectoralis major, ..."

4. Cunningham's Manual of Practical Anatomy by Daniel John Cunningham, Arthur Robinson (1914)
"Follow the cephalic vein and the deltoid branch of the thoraco-acromial artery medially, under cover of the clavicular part of the pectoralis major and ..."

5. The American Journal of the Medical Sciences by Southern Society for Clinical Investigation (U.S.) (1866)
"portion of the pectoralis major. Externally and posteriorly to the artery rest the branches of the axillary plexus of nerves, and internally and nearer to ..."

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