| Cells of the nephron tubule may secrete nitrogenous wastes into the urine and reabsorb water and nutrients. |
| Normal urinary proteins include albumin, serum globulins, and proteins secreted by the nephron. |
| It performs all these tasks in different parts of the nephron, the functional unit of the kidney. |
| 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 functional unit in the kidney of all vertebrates is the uriniferous tubule comprising a nephron and a collecting tubule. |
