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3 Cards in this Set
- Front
- Back
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Pectoralis minor
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Origin: Ribs 2-5, Ribs 3-5, or Ribs 2-4
Insertion: Coracoid process of scapula Action: Abducts scapula and rotates it downward, elevates third through fifth ribs during forced inhalation when scapula is fixed |
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Trapezius
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Origin: Superior nuchal line of occipital bone, ligmentum nuchae, and spines of C7 and T1-T12
Insertion: Clavicle and acromion and spine of scapula Action: Superior fibers elevate scapula and can help extend head; middle fibers adduct scapula; inferior fibers depress scapula; superior and inferior fibers together rotate scapula upward; stabilizes scapula |
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Levator Scapulae
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Origin: C1-C4
Insertion: Superior vertebral border of scapula Action: Elevales scapula and rotates it downward |
