Across
- 2. heart rate found by 220-age
- 4. the largest artery in the body; takes oxygen rich blood to the entire body
- 6. the vena cava at the top of the heart
- 9. the chambers of the heart squeeze
- 10. valve separating the right atria and right ventricle
- 11. the oxygen poor side of the heart
- 14. valve that separates the left atria and left ventricle
- 15. heart rate after performing physical activity
- 17. the chambers on the bottom of the heart
- 19. the oxygen rich side of the heart
- 20. a waste product of the circulatory system
- 21. these structures allow blood to flow in one direction
Down
- 1. the vena cava at the bottom of the heart
- 3. chambers at the top of the heart
- 5. blood vessels that take blood away from the heart
- 7. another word for lungs
- 8. the smallest of blood vessels
- 12. blood vessels that bring blood back to the heart
- 13. number of chambers in the heart
- 16. heart rate while at rest; between 60-100 beats per minute
- 18. heart rate when performing physical activity