Across
- 3. A flap that keeps blood flowing in the correct direction.
- 5. The continuous movement of blood through the body.
- 8. The smallest blood vessel where gases and nutrients are exchanged.
- 9. A gas carried by the blood that cells need to survive.
- 10. The liquid part of blood that carries cells and nutrients.
- 12. The liquid that transports oxygen and nutrients throughout the body.
- 14. The wall that separates the left and right sides of the heart.
- 16. A blood vessel that carries blood back to the heart.
- 18. Upper chamber of the heart that receives blood.
- 19. The muscular organ that pumps blood throughout the body.
Down
- 1. A blood cell that helps protect the body from infections.
- 2. The regular pumping action of the heart.
- 4. A blood cell that carries oxygen throughout the body.
- 6. A blood cell that helps stop bleeding by forming clots.
- 7. A waste gas carried by the blood to the lungs.
- 11. Blood vessel that carries blood away from the heart.
- 13. The rhythmic beating of an artery caused by the heartbeat.
- 15. The organ where blood picks up oxygen and releases carbon dioxide.
- 16. Lower chamber of the heart that pumps blood out.
- 17. The largest artery in the human body.