Across
- 3. main vein responsible for carrying blood back to the heart. superior and inferior
- 4. name for artery's and veins connected to the lungs
- 8. valve between right atrium and right ventricle
- 11. valve between left atrium and left ventricle
- 13. a muscular organ that pumps blood
- 14. protein with red blood cells that carries oxygen
- 15. a low pressure blood vessel that returns de-oxygenated blood back to the heart
Down
- 1. the upper chambers of the heart
- 2. the lower chambers of the heart
- 5. largest artery in the body. connects to the top of the heart and descends downward
- 6. small blood vessels which deliver blood directly to parts of the body
- 7. node in the heart generates electrical impulses to contract the heart. also known as the "pacemaker"
- 9. a high pressure blood vessel that carries blood away from the heart
- 10. name of blood cell that carries oxygen. a "blank"- blood cell
- 12. fluid that transports oxygen throughout the body