lumbar branch of iliolumbar artery

lum·bar branch of il·i·o·lum·bar ar·ter·y

[TA] terminal branch of iliolumbar artery (with iliac branch) that ascends to supply psoas major and quadratus lumborum muscles; anastomosis: fourth lumbar artery. Synonym(s): ramus lumbalis arteriae iliolumbalis [TA]