Pectoralis minor muscle

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Description:

Origin:
Junctions of ribs 3, 4, and 5 with their costal cartilages and to the fascia of the external intercostal muscles

Insertion:
Medial border of the coracoid process of the scapula

Actions:
Abducts the scapula

Nerve supply:
Medial and lateral pectoral nerves

Blood supply:
Branches of the axillary artery