Usually overlying the second lumbar vertebral body, but subject to considerable variation, the paired renal arteries next emanate laterally from the aorta.

• 再从主动脉分支出来的是一对肾动脉，它们从主动脉的侧面伸出，通常覆盖在第二腰椎体上，这一对动脉有相当大的变数。