原肾[1][2]（英语：archinephros），是原始肾脏，在盲鳗和某些无足目动物幼体体内得以保存下来。亦见于高等动物胚胎中，是最简单的排泄器官。原肾在人类和其它哺乳动物体内没有任何功能[3]。
参考资料
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