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Related to Lumbar arteries: Anterior spinal artery
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Lumbar arteries, usually four on each side, arise as dorsal branches of abdominal aorta.
Getty (1981), in relation to the artery supply of the adrenal gland, says that it may come from the branches of the renal arteries, straight from the aorta, from the frenic abdominal artery and, occasionally, from the lumbar arteries.