Across
- 4. The start of digestion
- 6. Airways in the lungs that run from the bronchi to the alveoli
- 7. Carries blood back to the heart
- 8. Allows air to and from the lungs
- 11. A group of similar cells that perform the same function
- 13. Where most nutrients is absorbed
- 15. Carries blood away from the heart
Down
- 1. Found in kidney, is a filter that blood goes through
- 2. The passages that direct air to the lungs
- 3. Absorbs water
- 5. Breaks down food and absorbs nutrients
- 9. A blood cell that fights disease
- 10. Large, flat muscle that helps when breathing
- 12. Upper chamber of the heart
- 14. Lower chamber of the heart