Either of two large, bilateral muscles overlying the upper, anterior chest wall, which has two heads: the clavicular head, which originates on the medial half of the clavicle, and the sternal head, which originates on the sternum and the first six costal cartilages; the muscles insert onto the lateral lip of the intertubercular groove of the humerus and the crest of the greater tubercle of the humerus respectively, and function to flex, adduct, and medially rotate the shoulder joint.

http://purl.obolibrary.org/obo/NCIT_C33284

Either of two large muscles of the anterior chest wall, which has two heads: the clavicular head, which originates on the medial half of the clavicle, and the sternal head, which originates on the sternum and the first six costal cartilages; the muscles insert onto the lateral lip of the intertubercular groove of the humerus and the crest of the greater tubercle of the humerus respectively; primary function is flexion, adduction, and medial rotation of the shoulder joint.

C33284

CDISC

Either of two large, bilateral muscles overlying the upper, anterior chest wall, which has two heads: the clavicular head, which originates on the medial half of the clavicle, and the sternal head, which originates on the sternum and the first six costal cartilages; the muscles insert onto the lateral lip of the intertubercular groove of the humerus and the crest of the greater tubercle of the humerus respectively, and function to flex, adduct, and medially rotate the shoulder joint.

http://purl.obolibrary.org/obo/NCIT_C77526

http://purl.obolibrary.org/obo/NCIT_C74456

http://purl.obolibrary.org/obo/NCIT_C66830

http://purl.obolibrary.org/obo/NCIT_C61410

Pectoralis Major

Pectoralis_Major

Pectoralis Major

NCIT:C33284

Pectoralis Major

Anatomical Structure

C0585574

http://purl.obolibrary.org/obo/NCIT_C33286