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Scapula Muscles and Motion

  •  English    10     Public
    Review of the muscles acting on scapular motion
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  • Which Muscle has fibers that both elevate and depress the scapula?
    Trapezius
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  • What is the innervation of the Trapezius Muscle?
    Spinal accessory nerve and branches of C3, C4
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  • The origin of this muscle is on C7 spinous process and T1 vertebrae
    Rhomboid Minor
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  • The innervation of the Rhomboid Minor and Rhomboid Major
    Dorsal Scapular nerve
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  • This muscle MAIN action is only to elevate the scapula at the medial margin
    Levator Scapulae
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  • What is the action of the serratus anterior muscle?
    ABDuction and upward rotation
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  • Which muscle does the Medial Pectoral Nerve innervate?
    Pectoralis Minor
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  • What is the action of the Pectoralis Minor Muscle?
    Abduction, Downward Rotation, Depression
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  • What is the action of the Subclavius Muscle?
    Stabilization of the SC joint, depression, abduction
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  • What are the five muscles that only act on the scapula or clavicle but NOT the humerus?
    Pectoralis Minor, Trapezius, Rhomboid, Levator Scapula, Serratus Anterior
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