Across
- 2. separates the left and right sides of the heart
- 3. a word that refers to the lungs
- 5. blood vessels that carries blood toward the heart
- 6. white blood cell that surrounds and engulfs invaders
- 8. the body's largest artery
- 9. a fatty substance that can build up in blood vessels
- 11. liquid part of blood
- 13. natural covering that is formed by the body after an injury
- 16. sickness brought on by virus or bacteria or fungi
- 18. dioxide a gas that is released by body blood cells and exhaled from the body
- 20. a one way door that keeps blood traveling in the right direction
Down
- 1. a protective sac that encloses the heart
- 4. an organ located in the chest that exchanges carbon dioxide for oxygen
- 7. protein found in red blood cells and transports or carries oxygen
- 10. a yellowish substance that can form after a foreign object enters the body.
- 12. blood vessel that carries blood away from the heart
- 14. helps clot the blood
- 15. node the heart's natural pacemaker
- 17. a state of being able to prevent getting a disease or virus
- 19. a chemical element found in air and inhaled into the lungs