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Excretion and Osmoregulation in Phylum Platyhelminthes?

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Excretion and Osmoregulation in Phylum Platyhelminthes?

Postby MusicSavesYourLife » Sun Feb 22, 2009 1:33 am

We are study Platyhelminthes in my zoology class and I was trying to read the section on excretion and osmoregulation. It was confusing, and I simply cannot comprehend it at all. Would someone PLEASE help me understand it by either explaining it or helping me find a reliable site that will explain it?

Much appreciation!
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Postby plasmodesmata11 » Tue Feb 24, 2009 2:46 am

I may be explaining basics to you, since I am learning this concurrently, so I apologize in advance if necessary. Most excretion takes place by diffusion, although there is the excretory and osmoregulatory structure called the protonephridia. They are tubes with flame bulbs at the end which are collecting cells with cilia. They beat the cilia to channel waste out of the system through excretory pores (nephridopores?). I know little beyond this, so I hope that can help.
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Postby MusicSavesYourLife » Fri Feb 27, 2009 12:48 am

Yeah, that explanation helped a lot more than my textbook did.
Thanks!
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