Across
- 3. receives blood low in oxygen
- 7. made in the bone marrow
- 9. carries oxygenated blood away from the heart
- 10. rate how many times your heart beats in 1 minute
- 11. protects the body against illness and disease
- 12. carries the blood to the heart
Down
- 1. takes blood from the right atrium
- 2. where oxygen enters the bloodstream
- 4. carries oxygen to the heart
- 5. the largest artery of the body
- 6. takes blood from the left atrium
- 8. receives blood full of oxygen