A fifth pair, small in size, is occasionally present: they arise from the middle sacral artery.
They run lateralward and backward on the bodies of the lumbar vertebræ, behind the sympathetic trunk, to the intervals between the adjacent transverse processes, and are then continued into the abdominal wall.
They now cross the Quadratus lumborum, the upper three arteries running behind, the last usually in front of the muscle.
CT appearance of a patent impar umbilical artery in an adult woman and related anomalies: a case report and review of the literature.(computed tomography)(Case study)
Jan 20, 2009; Authors: Bernhard Glodny (corresponding author) ; Benjamin Henninger ; Karin Hofmann ; Thomas Trieb ; Johannes...