Across
- 3. these filter the uric salts and acids that become urine
- 5. fingers and toes exposed to extreme cold can get this
- 7. vestigial stucture that can kill you if it bursts
- 10. blood enters the heart here
- 11. acid is added to the food here
- 12. blood vessels that take blood away from the heart
Down
- 1. this organ makes heat for the body and filters toxins
- 2. major muscle of the circulatory system
- 4. the muscle that controls your breathing
- 6. largest organ in the excretory system
- 8. salivary glands add this to the chewed food
- 9. when a artery is blocked or ruptured, cutting off O2 to the brain