Across
- 5. outer lining of the heart
- 12. instrument that measures blood pressure
- 13. relaxation of the heart
- 14. small vein
- 15. blood that has a deficiency in oxygen
Down
- 1. inner lining of the heart
- 2. upper chamber of the heart
- 3. sound caused by improper closure of a heart valve
- 4. gas released by the body
- 6. a small artery
- 7. largest artery in the body
- 8. heartbeat felt through walls of artery
- 9. specialized tissue between the atria
- 10. lower point of the heart
- 11. artery located on either side of the neck