Action: elevates scapula; depresses scapula; rotates scapula; adducts scapula Origin - Occipital bone; spinous processes of C7-T12 Insertion - Lateral 1/3 of clavicle; spine of scapula; acromion process of scapula Innervation - motor - spinal accessory (XI), proprioception - C3-C4

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1.
Action: elevates scapula; depresses scapula; rotates scapula; adducts scapula
Origin - Occipital bone; spinous processes of
C7-T12
Insertion - Lateral 1/3 of clavicle; spine of scapula; acromion process of scapula
Innervation - motor - spinal accessory (XI), proprioception - C3-C4