原腎[1][2](英語:archinephros),是原始腎臟,在盲鰻和某些無足目動物幼體體內得以保存下來。亦見於高等動物胚胎中,是最簡單的排泄器官。原腎在人類和其它哺乳動物體內沒有任何功能[3]

成熟脊椎動物的三種腎臟是由原腎發育而來的:前段發育為前腎,中段發育為中腎英語mesonephros,後段發育為後腎[4]

參考資料

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