Latissimus Dorsi

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Latissimus Dorsi
Muscle Type
Origin Inferior angle of the scapular, 9-12 ribs, spinous processes of T7-T12, thoracolumbar fascia
Insertion Intertubercular sulcus of humerus
Action Extension, adduction and internal rotation of the arm, aids in respiration
Synergists
Antagonists
Spinal innervation C6, C7, C8
Peripheral Innervation Thoracodorsal Nerve
Vasculature

Palpation

Along the midaxillary line on the trunk