Across
- 3. blood pressure. makes the heart work harder.
- 7. takes blood from the heart.
- 9. makes co2
Down
- 1. vena cava. returns blood from the lower body
- 2. the main artery of the heart
- 4. pumps blood through the body
- 5. cava. carries deoxygenated blood to the heart
- 6. carries deoxygenated blood to the heart.
- 8. opens to let blood in the heart.
- 10. vena cava. returns blood from the upper body