Action: Flexes arm at shoulder; rotates arm medially; adducts arm Origin - Sternal end of the clavicle; ribs 1-6 Insertion - Greater tubercle of humerus Innervation - Medial and lateral pectoral nerves (C5-T1)

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1.
Action: Flexes arm at shoulder; rotates arm medially; adducts arm
Origin - Sternal end of the clavicle; ribs 1-6
Insertion - Greater tubercle of humerus
Innervation - Medial and lateral pectoral nerves (C5-T1)