yogabook / muscles / autochthonous back muscles / iliocostalis lumborum
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M. iliocostalis lumborum
Origin: ilium and sacrum
Insertion: costal processes of the upper lumbar vertebrae and the 6th to 9th rib
Antagonists:
Movement: Bilateral innervation: extension of the spine; unilateral innervation: ipsilateral lateral flexion of the spine or elimination of contralateral lateral flexion.