Across
- 4. the liquid part of blood
- 9. lower chamber in the heart
- 10. sacs of lung tissue specialized for the movement of gases between air and blood
- 12. . The passages that direct air into lungs
- 14. A tube that connect the mouth to the stomach
- 15. airways that to the alveoli
Down
- 1. upper chamber of the heart
- 2. system, brings oxygen in the body and takes out carbon dioxide .
- 3. allows air to pass through the lungs and out
- 5. intestine. Absorbs water
- 6. Carries blood away from the heart
- 7. system. removes waste and keeps water balance
- 8. large flat muscle at the bottom of chest.
- 11. the cover of the inner surface of the small intestine
- 13. filter that blood goes in