| A | B |
|---|
| Urinary System | controls the excretion of metabolic wastes |
| Kidney | contains millions of nephrons which filter |
| Nephron | functional unit of the kidneys |
| Urine | contains water soluble waste products |
| Urea | water soluble nitrogenous-rich molecule produced by the liver |
| Ureter | transport urine into the bladder from the kidney |
| Bladder | stores urine |
| Urethra | transport urine from the bladder to the outside of the body in both males and females & transport semen in males |
