Term
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Definition
orgin: occipital bone, ligament nuchae
insertion: posterior border of lateral third of clavical
action: elevation of scapula
innervation: accesory nerve (cranial nerve XI) and branches of C3-C4 |
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Term
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Definition
orgin: ligamentum nuchae
insertion: top of acromion process
action: elevation, upward rotation, assists with retraction ( adduction) |
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Term
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Definition
orgin: spinous process of seventh cervical and upper three thoracic vertebrae
insertion: upper border or scapular spine
action: retraction (adduction) |
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Term
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Definition
orgin: spinous processes of fourth-12th thoracic vertebrae
insertion: root of scapular spine
action: depression, upward rotation and assists with retraction |
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Term
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Definition
orgin: transverse processes of upper four cervical vertebrae
insertion: medial border of scapula above base of scapular spine
innervation: dorsal scapular nerve (c5) & branches of C3 & C4 |
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Term
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Definition
orgin: spinous processes of T2 to T5
insertion: medial border of scapula from inferior of scapular spine to inferior angle
action: retraction, downward rotation, and elevation
innervation: dorsal scapular nerve (C5) |
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Term
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Definition
orgin: spinous process of C7 and T1
insertion: medial border or scapula adjacent to scapular spine
action & innervation: same for rhomboid major |
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Term
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Definition
orgin: surface or upper 8-9 ribs at side of chest
insertion: anterior aspect of total length of medial border of scapula
action: protraction (abduction), upward rotation
innervation: long thoracic nerve (C5-C7) |
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Term
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Definition
orgin: anterior surface of 3rd to 5th ribs
insertion: coracoid process of scapula
action: protraction, downward rotation and depression
innervation: medial pectoral nerve (C8-T1) |
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Term
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Definition
orgin: from junction of 1st rib & its costal cartilage
insertion: groove of inferior surface of middle of clavical
action: depression
innervation: branches from C5 to C6 |
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