excretory organ

同根派生

An excretory organ of certain invertebrates.
某些無脊椎動(dòng)物的排泄器官
The excretory organ of a vertebrate embryo from which the kidney develops.
原腎脊椎動(dòng)物胚胎的排泄器官，腎由此發(fā)展而來
A tubular excretory organ in many invertebrates, such as mollusks and earthworms.
腎管許多脊椎動(dòng)物，比如軟體動(dòng)物和蚯蚓的管狀排泄器官
In birds,reptiles,and mammals it replaces the mesonephros as the functional excretory organ and develops into the adult kidney.
在鳥類、爬行動(dòng)物和哺乳動(dòng)物中它代替中腎起排泄器官的作用，并最終發(fā)育成腎。
The development of the kidney, the major excretory organ after birth, consists of 3 stages: the pronephros, mesonephros and metanephros.
摘要腎臟是人體主要的排泄器官，它的發(fā)育經(jīng)過原腎、中腎、后腎3個(gè)階段。