Functional Anatomy

Pectoralis Major (Sternocostal Portion)

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Pectoral Girdle Extension Test (Wright Test)

Functional Anatomy

Testing Tape Specification KT Method

Confirmation Testing

Origin

Anterior surface of the sternum,
sternocostal cartilage of ribs 1-7,
aponeurosis of the external oblique
muscle

Insertion

Crest of the greater tubercle of the
humerus

Actions

The clavicular fibers are more anterior and
caudal on the crest than the sternocostal
fibers which twist on themselves and are
more posterior and cranial

Nerve

Lateral and Medial Pectoral Nerves

0011-GH-XX Pectoralis Major (Sternocostal Portion)

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Functional Anatomy

2007-12-14

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