Across
- 3. lower part of the heart
- 5. mucular organ forming a air passage to the lungs
- 7. membrane lined cavity behind the nose
- 9. clots blood
- 13. organ that pumps our blood
- 15. branches off of the bronchi in the lungs
- 16. tiny air sacs in the lungs for gas exchange
Down
- 1. organ you need for breathing
- 2. carrys our oxygen
- 4. dioxide waste gas
- 6. connects arteries and veins
- 8. organ connected to the aortic valve
- 10. conveys air to the lungs also known as the windpipe
- 11. carries carbon dioxide
- 12. major passage to the lungs that divide from the windpipe
- 14. upper chambers of the heart