Across
- 7. body system where blood travels
- 8. allows oxygen to enter the blood stream
- 9. a medical emergency when an artery is blocked
- 10. bone that protects your brain
- 11. these carry blood to the heart
Down
- 1. these carry blood away from the heart
- 2. the largest bone in the body
- 3. body system that breaks down food
- 4. muscle that pumps blood
- 5. the sound your heart makes when it pumps blood
- 6. allows your body to move
- 7. what arteries and veins do to blood