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]

成熟脊椎动物的三种肾脏是由原肾发育而来的:前段发育为前肾,中段发育为中肾英语mesonephros,后段发育为后肾[4]

参考资料

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