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英文翻译:Invertebrates to rid the body of waste organs. The general sub-situations: (1) no special drainage devices. Such as coelenterate, etc. directly from the various cells, gas exchange and discharge of waste; echinoderms from the deformation of body cavity fluid cell collection metabolites across the skin gills escape in vitro. (2) contraction bubble. protozoa found in fresh water and porous animal production. (3) of the original kidney. found in Platyhelminthes, there are fake body cavity of animals and part of animals and molluscs larvae. the basic structure for the 1 on the longitudinal excretory duct and the number of lines, ranging from flame cell flame cell hollow, containing a bundle of cilia continue to swing to the collection of waste sent to the excretory duct, excretory pore from the exhaust. But the line of insects is only one original cell-derived renal tubular or H-shaped cells, nonciliated cells, excretory duct cells of pipes for. (4) after the kidney-type. found in annelid and molluscs. the basic structure, including openings in the body cavity of the 1 on one or more pairs of glandular organs, metabolic wastes discharged by the kidneys Kong. annelid post-renal tube (ectodermal origin) and the mesoderm may be the source of the body cavity tube synthesis of the common ducts and excretory pore. Some species can also be the original kidney tube and body cavity catheter synthesis. some crustacean similar excretion of renal tube device, saying antennary gland. (5) Malpighian tubules. found in terrestrial arthropods. Malpighian tubules was filamentous, from two to hundreds of Article immersed in the blood. Malpighian tubules of the wall is only one layer of cells, the end of the blind side, other side of the pass into the gastro-intestinal, metabolic wastes excreted by the anus.

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