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The comment of the poster to my request for clarification cites “The formation of ammonia itself requires… large quantities of water to dilute it out of a biological system” I conclude that he assumes that the problem with animals eliminating ammonia as such is one of solubility in water. This is not the case. The solubility of ammonia is such that saturated ...


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The water doesn't get drained. As blood flows down a vas rectum, in any given section of the arteriole the tonicity is slightly higher outside the arteriole vs inside the arteriole. This results in a small amount of water flowing out of the arteriole to attempt to equilibrate the osmolarity. But before this has even finished happening, the blood has ...


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