Across
- 2. What stops blood from flowing the wrong way
- 5. The heart beats because of an area called the ___
- 6. Arteries carry this from the heart
- 9. What does the heart act like? A ___
- 11. Blood without oxygen is called?
- 12. A normal heart has 70 ___per minute
- 14. The force of each heart beat is measured as blood ___
- 15. The blood receives oxygen here
- 16. A blood vessel returning blood to the heart
Down
- 1. A type of heart chamber
- 3. A blood vessel taking blood away from the heart
- 4. Veins carry this back to the heart
- 7. The smallest blood vessel
- 8. A type of heart chamber
- 10. We can feel this at the wrist
- 13. Where in the lung does the circulation exchange gas