Across
- 2. the tube that connects from the urinary bladder to the outside world
- 4. the over reaction to a foreign antigen
- 7. the microscopic unit in the kidney that filters the waste out of the blood
- 8. when the immune system starts to attack the body's own cells
- 10. an increase in the normal body temperature
- 11. when the body has seen this antigen before and, after having this antigen before, knows how to fight it off
- 12. a foreign substance in the body that the macrophages have to fight off
Down
- 1. the tube that connects the kidney to the urinary bladder
- 2. the organ that stores the body's waste, or urine
- 3. the specific system in the body to fight off diseases
- 5. red, swelled, heated reaction to foreign antigens
- 6. they body's organs that filter out the waste in the blood
- 9. the body's liquid waste, which contains mostly water, waste, and some blood plasma