Across
- 2. ammonia
- 4. the microscopic unit that filters the blood in the kidneys
- 7. automatic attack against a pathogen because of past exposure
- 8. the molecule recognised by the immune system as foreign
- 9. the overreation of the immune system
- 10. the organ that filters wastes from the blood
- 12. the sack that temporarily stores urine
- 14. the body's difense system
Down
- 1. the waste containing body fluid
- 3. the immune system attacks its own cells
- 5. the tube that carries urine to the bladder from the kidneys
- 6. characterized by sweeling or redness
- 11. the tube that carries urine out of the body
- 13. an increase in body tempurature