Across
- 2. chambers on the top of the heart are called
- 7. the largest chamber in the heart
- 9. oxygen is needed to produce... in muscles, the brain and others
- 12. blood vessels that carry blood from the lungs to the heart
Down
- 1. organs work together in your body to perform specific F........
- 3. the heart has...chambers
- 4. carry blood away from the heart and veins carry blood back to the heart
- 5. chambers at the bottom of the heart
- 6. blood vessels that carry blood to the heart
- 8. valve between the left atrium and left ventricle
- 10. Blood carries
- 11. valve between the right atrium and right ventricle