SERRATUS ANTERIOR

• Origin

Ribs 1-8 or 9

• Insertion

Anterior surface of medial border of scapula

• Agonist(s)

- Pectoralis minor

- Subclavius

• Antagonist(s)

- Rhomboids

- Trapezius

• Function

Protracts and stabilizes the scapula; rotates the scapula upward