| A | B |
|---|
| excretion | removal of waste from the body |
| ureters | 2 tubes that carry urine from the kidneys to the bladder |
| urea | liquid waste released by cells |
| bladder | a muscular, balloon-like organ that stores urine |
| urethra | tube that drains urine from that bladder to outside body |
| urine | urea diluted with water |
| kidneys | 2 organs that filter urea from bloodstream |
| nephrons | tiny filters in kidneys that clean urea from blood |
| kidneys, ureters, bladder, urethra | parts of the excretory system |
| to remove liquid waste from the body | function of excretory system |
