Segment of kidney

... circulatory.. (because that site is my reference) snail has a posterior kidney, and it has 7 segment. and now the question is:: how can that blood -the blood that contains O2 and CO2- ...

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... organs). pronephros is the first evolutionary stage of the vertebrate kidney. You find in Agnatha. By the way, nephridiopor is the orifice that ... at Lumbricus terrestris. The nephrostom from the metanephridia of one segment opens in the segment in front. Is everything cristal clear now? victor ...

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... organs). pronephros is the first evolutionary stage of the vertebrate kidney. You find in Agnatha. By the way, nephridiopor is the orifice that ... at Lumbricus terrestris. The nephrostom from the metanephridia of one segment opens in the segment in front. Is everything cristal clear now?

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