Across
- 1. Fluid that circulates in the circulatory system.
- 3. Gas produced during respiration.
- 6. Beat of the heart felt at arteries.
- 7. The system involving the heart and blood vessels.
- 11. Formation of blood cells.
- 13. Blood vessel carrying oxygenated blood away from the heart.
- 14. Liquid part of blood.
- 15. Rhythmic contraction of the heart.
- 18. Protein in red blood cells that carries oxygen.
- 20. Small artery.
- 21. The movement of blood in the body.
- 24. To add oxygen to.
- 27. The very small air sacs where the exchange of oxygen and carbon dioxide takes place
- 28. Measurement of blood pressure during heartbeats.
- 29. Tiny blood vessel where gas exchange occurs.
- 30. Blood cells responsible for oxygen transport.
Down
- 2. Essential gas for respiration.
- 4. Pertaining to breathing.
- 5. Relating to the lungs.
- 8. Upper chamber of the heart.
- 9. Cluster of alveoli in the lungs.
- 10. Ratio of red blood cells to total blood volume.
- 12. Windpipe connecting the throat to the lungs.
- 16. Muscle aiding in breathing.
- 17. Tube carrying air into the lungs.
- 19. Organs for breathing and oxygen exchange.
- 22. Process of breathing.
- 23. Lower chamber of the heart.
- 25. Blood vessel that returns deoxygenated blood to the heart.
- 26. Largest artery in the body.