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Action: Laterally bends the trunk, fixes the 12th ribOrigin - Posterior part of the iliac crest and the iliolumbar ligamentInsertion - Transverse processes of lumbar vertebrae 1-4 and the 12th ribInnervation - Subcostal nerve and ventral primary rami of spinal nerves L1-L4

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1.
Action: Laterally bends the trunk, fixes the 12th rib
Origin - Posterior part of the iliac crest and the iliolumbar ligament
Insertion - Transverse processes of lumbar vertebrae 1-4 and the 12th rib
Innervation - Subcostal nerve and ventral primary rami of spinal nerves L1-L4





 
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