"origin: transverse process L5 vertebra, iliolumbar ligament and internal rim iliac crest"
"insertion: transverse processes L1-L4, inferior margin of medial half 12th rib"
"action: extension and lateral flexion of vertebral column; fixes 12th rib during inspiration to stabilise the diaphragm"
"blood supply: branches of the lumbar arteries and other smaller arterial branches, as described below"
"innervation: ventral rami of the 12th thoracic nerve and L1-L4 spinal nerves"
"insertion: transverse processes L1-L4, inferior margin of medial half 12th rib"
"innervation: ventral rami of the 12th thoracic nerve and L1-L4 spinal nerves"
"L1-L4 spinal nerves"
"The quadratus lumborum muscle is supplied by:"
Expected headings
"Action"
"action: extension and lateral flexion of vertebral column; fixes 12th rib during inspiration to stabilise the diaphragm"
"subcostal, ilioinguinal and iliohypogastric nerves"