Across
- 3. A condition where arteries narrow and harden
- 5. A protein on red blood cells that determines blood type
- 7. The electrical signal that regulates heart contractions
- 9. A type of white blood cell that helps the immune system
- 11. A disorder where the body produces too many white blood cells
- 13. The structure that prevents blood from flowing backward in veins
- 15. A procedure used to open blocked arteries.
- 18. A network of vessels that return fluid to the bloodstream.
- 19. The smallest blood vessels in the body
- 20. The primary function of red blood cells
Down
- 1. A condition where the heart beats too fast
- 2. The largest part of the heart responsible for pumping blood
- 4. The phase of the heartbeat when the heart contracts
- 6. A condition where the heart beats too slow.
- 8. A genetic disorder affecting hemoglobin structure
- 10. A device used to regulate an abnormal heartbeat
- 12. The phase of the heartbeat when the heart relaxes
- 14. The number of chambers in the heart
- 16. A condition caused by insufficient red blood cells
- 17. The structure that connects arteries and veins