Hello, kids! I'm Dr. Pedantic and I'm here to talk about kidneys and bladders! Yay! Are ya ready? Well, ARE YA?!
Ummmm, OK...
Kidneys act as blood filters and regulate electrolyte levels. They DO NOT in fact have any effect on urine retention capacity. That would be a function of the bladder.
That's, um, fascinating...
So adding a 3rd kidney would not allow one to pee much longer than the average person... Uh, where'd ya go, little girl? ... *sigh* ... Nobody likes Dr. Pedantic...
