- Study guides, Revision notes & Summaries

1. What is the origin, insertion, and action of the Quadratus lumborum? Posterior iliac crest, Last ribs and transverse processes of first though fourth lumbar vertebrae, Unilaterally elevates the pelvis or laterally flexes the vertebral column to the same side Anterior iliac crest, Last ribs and transverse processes of first though fourth lumbar vertebrae, Unilaterally elevates the pelvis or laterally flexes the vertebral column to the same side Posterior iliac crest, Last ribs and tr...