Across
- 4. cellular waste (urine)
- 6. Tube that carries urine from the bladder to the outside of the body
- 7. eliminates waste materials to keep the body cells clean
Down
- 1. Tubes that lead from each kidney to the bladder
- 2. Main organ of the excretory system
- 3. Storage sac for urine
- 5. liquid stored in the bladder