Respiratory and Circulatory System
Across
- 5. the system that circulates blood throughout the body
- 6. cells in blood that help you fight disease
- 9. mostly water, the medium through which blood cells and platelets are transported throughout the body
- 12. "windpipe"
- 14. branch off of the trachea, and are the main passageway of air into the lungs
- 16. the two lower chambers of the heart
- 17. moves up and down expanding and contracting the rib cage causing you to exhale or inhale
- 20. a pale yellow liquid that carries blood cells
- 21. carries blood depleted of oxygen back to the heart
Down
- 1. release substances that start the process of blood clotting
- 2. tiny air sacs in the lungs
- 3. the system for taking in oxygen and giving off carbon dioxide
- 4. blood cells that carry oxygen and carbon dioxide
- 7. transport blood throughout your body, and carry away waste
- 8. spongy,air-filled organs that are in the chest
- 10. a tiny blood vessel
- 11. carries oxygenated blood away from the heart
- 13. the regular throbbing of the arteries
- 15. fist sized organ that pumps blood throughout the body
- 18. two upper chambers of the heart
- 19. passageways to different chambers of the heart