2. Blood System Revision Test Click on the correct boxes or points. Right answers take you on to the end. Wrong answers take you back to the start.

4. 1.In this picture most of the blood cells are….. White Blood Cells Red Blood Cells Platelets

5. 2. Red Blood Cells…… Carry Food Fight Disease Carry Oxygen

6. 3. In one drop of blood there are approximately….. 700 Red Blood Cells 7000 Red Blood Cells 7 million Red Blood cells

7. 4. In one drop of blood there are approximately…. 500 White Blood Cells 5 Million White Blood Cells. 5,000 White Blood Cells.

8. 5. Click on the Right Atrium.

9. 6. Click on the left ventricle.

10. 7. Click on the main artery (Aorta). (Hint: it carries oxygenated blood to the body).

11. 8) Here are three blood vessels. Click on the picture of a vein.

12. 9) Cardiac Muscle is unusual because it……. Is stronger than other Muscle. Doesn’t have its own blood supply. Never gets tired.

13. 10) This is an old picture of: A grave-robber getting caught. Missionaries converting a cannibal. A top surgeon at work.

14. 11. The liquid part of the blood is called…. Serum Urea Plasma

15. 12) If a coronary artery gets blocked it can cause….. A strokeRheumatismAngina

16. 13) The proper term for a blockage in a blood vessel is….. Arthritis.AtheromaAneurysm

17. 14) The wall of an artery is mostly made of…. Gristle Blood Tissue. Muscle

18. 15) Veins have are the only blood vessels that have ….. A pulse. High blood pressure Valves

23. End

24. How much blood does an average person have in their body? 2 litres 3 litres 4 litres 5 Litres. 6 litres 10 litres