Across
- 2. We breathe this in as a reactant.
- 6. A buildup of this can cause heart diseases.
- 7. We can check for this using cobalt chloride paper.
- 10. This substance goes cloudy in the presence of carbon dioxide.
- 13. A clogging-up of the arteries that supply the heart with blood.
- 14. The artery leading to the body.
- 16. The largest vein in your neck.
Down
- 1. The part of the heart with the thickest muscle.
- 3. The organ that pumps blood around the body.
- 4. The part of the blood that carries oxygen.
- 5. The process of releasing energy in cells.
- 8. These vessels carry blood to the body.
- 9. These carry blood into the heart.
- 11. The liquid part of the blood, yellow in colour.
- 12. These occur when the heart cannot get enough oxygen-rich blood.
- 15. The organ that facilitates breathing.