| A | B |
|---|
| Excretory System | The system in the body that collects wastes produced by cells and removes the wastes from the body. |
| Excretion | The removal of waste from the body |
| Urea | A chemical that comes from the break down of proteins |
| Kidney | Excretory organ that eliminates urea and excess water |
| Urine | A watery fluid produced by kidneys |
| Urinary Bladder | Saclike muscular organ that stores urine. |
| Ureters | Carries urine from kidneys to bladder |
| Urethra | A small tube that lets urine flow from the bladder. |
| Nephron | Found in kidneys, millions of tiny filtering units and produces urine. |
| Metabolic waste | Water, salt and urea |
| Skin | Excretory organ that cools body and removes metabolic waste |
| Lungs | Excretory organ that removes carbon dioxide |
| Liver | Breaks down proteins by process called deamination and produces urea |
