Myology of the Shoulder

Myology of the Shoulder - Term Definition Upper Trapezius...

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Term: Upper Trapezius Definition: Prox - External occipital protuberance, medial third of the superior nuchal line, ligamentum nuchae, spinous process of c 7 Distal - Lateral third of clavicle, medial aspect of acromion process Act - elevation and upward rotation of scapula Nerv - spinal acccessory nerve and ventral rami of c2 - 4 Art - transverse cervical a. Term: Middle Trapezius Definition: Prox - spinous processes of T1-5 Distal - medial edge of acromion and superior edge of scapular spine Act - retraction of scapula Nerv - spinal accessory n. and ventral rami of c2-4 Art - tranverse cervical a.
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Term: Lower trapezius Definition: Prox - spinous processes of T6-12 Distal - medial end of the scapular spine *Act - scapular depression, retraction, and upward rotation * Nerv - spinal accessory n. and ventral rami of c2-4 Art - transverse cervical a. Term: Latissimus dorsi Definition: Prox - inferior angle of scapula, 9th - 12th ribs, spinous process of t7-12, thoracolumbar fascia, post 1/3 of iliac crest Dist - intertubercular groove of humerus Act - Ext, add, and IR Nerv - Thoracodorsal n. (C6, C7, C8) Art - Thoracodorsal a. Term: Posterior Deltoid Definition: Prox - Spine of scapula Dist - Deltoid tuberosity of humerus Act - Abd, ER, and ext of humerus Nerv - Axillary n (C5, C6) Art - Posterior circumflex humeral a.
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