Across
- 3. The organ that helps regulate blood pressure.
- 6. The condition where blood pressure is constantly high.
- 9. The smallest of blood vessels.
- 10. This body system collects fluid that is lost by the blood.
- 11. The location on red blood cells where oxygen binds.
- 12. This large muscle band is very important in the breathing process.
- 13. This habit can cause bronchitis, emphysema, and lung cancer.
- 14. Blood passes through this valve when going from the right atrium to the right ventricle.
- 15. The flap of tissue preventing food from entering your trachea.
- 19. An animal who's body temperature is effected by external temperatures.
Down
- 1. All arteries carry oxygenated blood with the exception of this one.
- 2. The area within the lungs in which gas exchange occurs.
- 4. Air is filtered, warmed, and moistened when it enters your mouth and this other structure.
- 5. Bronchi branch into smaller tube-like structures in the lungs called this.
- 7. The sac-like structure surrounding the heart.
- 8. The machine used to measure blood pressure.
- 16. This structure houses your vocal cords.
- 17. A group of similar cells that perform the same function.
- 18. These blood cells help fight infection.