| The functional unit in the kidney of all vertebrates is the uriniferous tubule comprising a nephron and a collecting tubule. |
| Each nephron is a tubular structure consisting of four regions. |
| This saves resources, but means that each nephron has to work harder, which in turn means that they wear out and die faster. |
| The structures of the nephron, cochlea and semicircular canals, and leaf stomata can all be modeled with long clown balloons. |
| Chronic renal failure is renal disease of a sustained nature that is not reversible and leads to destruction of nephron mass. |
| The filtrate, urine, leaves the nephron through a long tubule and collecting duct. |
