Across
- 4. The kidneys filter all the blood in _____
- 5. Eliminates _____ materials to keep cells healthy
- 7. Another name for urine
- 8. An organ that holds urine
- 9. The main organ of the excretory system
Down
- 1. Tubes that lead each kidney to the bladder
- 2. the integumentary system gets rid of _____
- 3. Tube that carries urine to the outside
- 4. the digestive system gets rid of _____
- 6. dioxide the respiratory system gets rid of _____