Across
- 7. brings blood back from the lungs
- 9. pumps blood to the lungs
Down
- 1. has the thickest walls
- 2. fills the heart with blood
- 3. pumps blood out of the heart
- 4. the large bone between the knee and your hip
- 5. the cage like bones that protect your upper organs
- 6. it pumps blood to the rest of the body
- 8. has the thinnest walls