Across
- 1. the tubes that enter into the lungs.
- 2. the domeshaped muscle under the lungs that allows breathing to occur.
- 3. the main organ of the respiratory system.
- 8. send blood away from the heart.
- 12. where air enters the body, moistens the air, and warms the air.
- 13. the system that allows gas exchange to take place.
- 14. cells that fight infections in the body.
- 16. the largest part of the brain that controls thoughts and your 5 senses.
- 17. the part of the brain that controls balance and coordination.
- 18. another name for the windpipe.
Down
- 1. the main organ of the nervous system
- 4. a thick bundle of nerves located in the center of your back.
- 5. the system that controls all bodily functions.
- 6. cells that carry oxygen throughout the body.
- 7. send blood back to the heart; sometimes a blue color.
- 9. the system that transports nutrients throughout the body.
- 10. the part of the brain that controls involuntary processes like breathing.
- 11. where oxygen rich and oxygen poor blood are transferred.
- 15. the main organ of the circulatory system.