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Cards In This Set
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Pectoralis Minor
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Action: protracts and depresses scapula
Origin: Ribs 3-5
Insertion: coracoid process of scapula
Innervation: medial pectoral nerve (C8-T1)
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Serratus anterior
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Action: Prime mover in scapula protraction; superiorly rotates scaupla (so glenoid cavity moves superiorly); stabilizes scapula
Origin: ribs 1-8, anterior and superior margins
Insertion: medial border of scaupla, anterior surface
Innervation: Long thoracic nerve (C5-C7)
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Trapezius
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Action: Superior fibers = elevate and superiorly rotate scapula; middle fibers = retract scapula; inferior fibers = depress scapula
Origin: occipital bone (superior nuchal line); ligamentum nuchae; spinous processes of C7-T12
Insertion: clavicle; acromion process and spine of scapula
Innervation: accessory nerve (CN XI)
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Rhomboid Major
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Action: elevates and retracts (adducts) scaupla; inferiorly rotates scapula
Origin: spinous processes of T2-T5
Insertion: medial border of scapula from spine to inferior angle
Innervation: dorsal scapular nerve (C5)
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Rhomboid Minor
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Action: elevates and retracts (adducts) scapula; inferiorly rotates scapula
Origin: spinous processes of C7-T1
Insertion: medial border of scapula superior to spine
Innervation: dorsal scapular nerve (C5)
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Levator Scapulae
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Action: elevates scapula; inferiorly rotates scapula (pulls glenoid cavity inferiorly)
Origin: transverse processes of C1-C4
Insertion: superior part of medial border of scapula
Innervation: cervical nerves (C3-C4) and dorsal scapular nerve (C5)
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