Across
- 3. Thick and elasticated blood vessels
- 6. Straw coloured liquid which makes up large % of blood
- 7. Valve found between the left atria and ventricle
- 10. These clot the blood to prevent bleeding
- 11. Vessel which carries blood from lungs to heart
- 13. Fibres which prevent valves going into the atria
- 16. The main organ involved in the CV system
- 17. One cell thick
- 18. Vessel which carries oxygenated blood to the body
- 19. The middle/thickest layer of the heart wall
- 20. Scientific names for cells which fight infection
Down
- 1. Chambers which receive blood coming into the heart
- 2. Vessel which carries deoxygenated blood back to the heart
- 4. Valve found between the right atria and ventricle
- 5. Vessels which allow gases to diffuse through
- 8. Valve which prevents backflow into the LV
- 9. Chambers which receive blood from the upper chambers
- 12. Vessels which contain valves and a large lumen
- 14. Molecule which carries 4 Oxygen molecules
- 15. Scientific name for Red Blood Cells