Trapezius – Essentials

Actions

• Extends head
• Elevates scapula
• Upwardly rotates scapula
• Retracts scapula
• Depresses scapula

Origins

• EOP
• Ligamentum nuchae
• SPs of C7 to T12
• Intervening supraspinous ligaments

Insertion

• Lateral 1/3 of clavicle
• Acromion process
• Scapular spine

MUSt16