Muscles that move the pectoral girdle

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Last updated 4:52 AM on 4/12/26
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5 Terms

1
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Trapezius

Origin: Occipital bone, ligamentum nuchae, and spinous processes of C7 and all thoracic vertebrae
Insertion: Clavicle, spine and acromion process of scapula
Action: rotates and retracts scapula, superior portion elevates scapula, inferior portion depresses scapula

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Rhomboid major

Origin: spinous processes of upper thoracic vertebrae

insertion: medial border of scapula

Action: elevates and retracts scapula

3
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levator scapulae

Origin: Transverse processes of cervical vertebrae

Insertion: Superior angle and medial border of scapula

Action: Elevates scapula

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Serratus anterior

Origin: Anterior surfaces of ribs 1–10

Insertion: Medial border of scapula

Action: Protracts and rotates scapula

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Pectoralis minor

Origin: Anterior surfaces of ribs 3–5

Insertion: Coracoid process of scapula

Action: Depresses and protracts scapula; elevates ribs during forceful inhalation