Across
- 1. A blood vessel that returns blood to the heart.
- 4. Small air sac in the lungs.
- 5. The voice box.
- 6. Too much liquid in the alveoli.
- 8. Plague built inside the arteries.
- 10. A brain attack.
- 11. Recycle red blood cells.
- 13. A cancer in white blood cells in the lymph nodes.
- 14. Enters the heart.
- 15. Produces t-cells.
- 16. A blood vessel that sends the blood away from the heart.
Down
- 2. A disease causes by worm, making people's leg swallen.
- 3. A body system that circulate the blood.
- 5. A body system that collects leaked fluids.
- 7. Exits the heart.
- 9. A bridge between artery and vein.
- 12. A muscle below the lungs.