Across
- 2. tiny vessels that exchange between tissue
- 5. blood vessel carrying blood to the heart
- 6. help the blood to clot
- 9. carries oxygen rich blood from lungs to heart
- 11. inner layer of the heart chamber
- 12. carries oxygen poor blood from the heart to the lungs
- 14. white blood cells that fight infection
Down
- 1. muscle layer around the heart
- 3. main artery carrying blood from heart
- 4. lower heart chamber that pumps blood
- 5. large vein that brings blood back to the heart
- 7. blood vessels carrying blood away from the heart
- 8. protective part around the heart
- 10. Upper heart chamber that receives blood
- 13. also known as the red blood cell