Musculus latissimus dorsi
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Latissimus dorsi muscle (plural: latissimi dorsi muscles, and colloquially often shortened to the lats) is one of the muscles that attaches the upper limb to the vertebral column.
Summary
- origin
- spinous processes of T7-T12 vertebrae and thoracolumbar fascia
- posterior third of the iliac crest
- 9-12ribs
- inferior angle of the scapula
- insertion: floor of the bicipital groove of the humerus
- innervation: thoracodorsal nerve
- arterial supply: thoracodorsal artery (a branch of the subscapular artery)
- action: adduction, internal rotation and extension of the shoulder joint
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