Across
- 2. how waste-filled blood flows back to the heart
- 6. middle layer of the heart wall
- 8. valve that closes to prevent return of aortic blood to left ventricle
- 9. yellow plaque is found within the lining of the artery
- 12. upper chamber of heart
- 13. partitions that separate the four chambers of the heart
- 15. artery that supplies blood to the head and neck
Down
- 1. a powerful muscular pump
- 3. innermost layer of epithelial cells
- 4. carries the blood to the capillaries
- 5. artery at the back of the knee
- 7. artery found in the foot
- 10. flaps of the valves
- 11. pathway of blood from the heart to the tissue capillaries and back to the heart
- 14. beat of the heart