Origin
Third to fifth ribs
Insertion
Coracoid process of the scapula (medial border/superior surface)
Actions
- Depression of the scapula
- Protraction of the scapula
- Elevation of the ribs
Innervation
- Medial pectoral nerve (C8 & T1)
- Lateral pectoral nerve (C5, C6, & C7)
Blood Supply
- Pectoral branch of the thoracoacromial artery
Would you like to learn more about the pectoralis minor muscle? Then check out the pectoralis minor muscle article and video by clicking the link below: Pectoralis Minor Muscle Anatomy
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