Across
- 3. the upper portion of the heart
- 4. number of functions the heart contains
- 5. returns blood to the heart
- 7. main organ of circulatory system
- 9. circulates blood through lungs
- 12. how many major blood circuits
- 15. works to circulate lymph into the body
Down
- 1. bottom portion of the heart
- 2. heart, blood, and blood vessels
- 6. carries blood away from the heart
- 8. the cavity the heart resides in
- 10. the heart is ______ to the lungs
- 11. approximate size of heart
- 13. carries oxygen rich blood to the body
- 14. action taken by the heart with blood