Across
- 1. what filters your blood?
- 5. expels urine out of the body
- 8. the kidneys lie in the what?
- 9. rock-like formations of minerals that develops in the urinary bladder
- 11. carries urine away from the kidneys
- 12. what makes urine by filtering waste?
Down
- 2. the what system never stops working?
- 3. helps the body do what to liquid waste
- 4. adult dogs can hold their urine up to how many hours?
- 6. what returns the needed substances to the blood and removes wastes
- 7. a container for urine
- 10. the body takes this from food and converts them into energy