Muscles of the pectoral group Flashcards by Nate Mitchell | Brainscape

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Pectoralis Major

Origin: Costal cartilages 1-6, sternum, medial clavicle

Insertion: (inferior to) greater tubercle

Action: adducts, medially rotates, and flexes humerus at the shoulder

Innervation: Brachial Plexus

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Q

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Pectoralis Minor

Origin: sternal ends of ribs 3-5

Insertion: Coracoid process

Action: depresses scapula

Innervation: Brachial Plexus

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