Lumbar branch of iliolumbar artery

Blood vessels · Latin: Ramus lumbalis arteriae iliolumbalis

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The lumbar branch of the iliolumbar artery (ramus lumbalis) supplies the psoas major and quadratus lumborum, anastomoses with the last lumbar artery, and sends a small spinal branch through the intervertebral foramen between the last lumbar vertebra and the sacrum, into the vertebral canal to supply the cauda equina.

Definition from Wikipedia, CC BY-SA 4.0.