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20 Cards in this Set
- Front
- Back
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Trapezius Origin |
medial ⅓ of superior nuchal line
occipital bone external occipital protuberance ligamentum nuchae spinous process of vertebrae C7-T12 (and associated supraspinous ligament) |
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Trapezius Insertion |
superior fibers: lateral ⅓ clavicle
middle fibers: acromion process, spine of scapula inferior fibers: spine of scapula |
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Trapezius Action(s) |
superior fibers: elevates scapula
middle fibers: retracts (adducts) scapula inferior fibers: depresses scapula superior and inferior fibers: upwardly rotate glenoid cavity of scapula |
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Trapezius Innervation |
motor: Spinal accessory n. (CN XI) (pain, proprioception: ventral rami of C3-C4 spinal nerves)
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Latissimus Dorsi Origin |
spinous processes of T7-T12 vertebrae, thoracolumbar fascia,
iliac crest (inferior 3-4 ribs; Note: some superior fibers attach to inferior angle of scapula) |
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Latissimus Dorsi Insertion |
intertubercular sulcus of humerus
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Latissimus Dorsi Action(s) |
extends, adducts, medially rotates shoulder jt.
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Latissimus Dorsi Innervation |
Thoracodorsal n. (middle branch of subscapular n.,derived from C6-C8 spinal cord segments)
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Levator Scapulae Origin |
transverse processes C1-C4 vertebrae (includes atlas and axis)
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Levator Scapulae Insertion |
medial border ofscapula between superior angle and spine of scapula
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Levator Scapulae Action(s) |
elevates scapula; downwardly rotates glenoid cavity of scapula
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Levator Scapulae Innervation |
Dorsal scapular n. (derived from C5 segment of spinal cord;C3-C4 spinal nerves)
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Rhomboid Minor Origin |
spinous process of C7-T1 vertebrae
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Rhomboid Minor Insertion |
medial border of scapula superior to spine |
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Rhomboid Minor Action(s) |
retracts, downwardly rotates glenoid cavity of scapula
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Rhomboid Minor Innervation |
Dorsal scapular n. (derived from C4-C5 spinal cord segments)
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Rhomboid Major Origin |
spinous processes of T2-T5 vertebrae
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Rhomboid Major Insertion |
medial border of scapula at and inferior to spine |
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Rhomboid Major Action(s) |
retracts, downwardly rotates glenoid cavity of scapula
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Rhomboid Major Innervation |
Dorsal scapular n. (derived from C4-C5 spinal cord segments)
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