I have wondered many times how a human would fare if the kidneys dumped urine into the start of the large intestines somewhere about the appendix instead of into a bladder to be sprayed out. I’m assuming water would be reabsorbed and slower to process out, primarily through sweat and evaporation from the lungs, and maybe diarrhea, though it may be that other waste products, such as salts or ureas may be absorbed into the large intestines instead of being ejected, though I have no idea if it would, or if it would be ejected as intended. Do we have any biologists here that could give insight on if combining both waste paths into one would be advisable?
That’s actually part of my question. The bowels also dump toxins overboard as well, but will they be enough to do the job?
I think you need to perhaps watch some videos explaining the anatomy/physiology of the gastrointestinal tract and urinary tract.
The kind of questions you’re asking can be easily answered with an understanding of the systems I’ve stated above.