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6. What does the circulatory system do?

  • Transport substances around the body
  • Provide enzymes for digestion
  • Produce hormones

7. What is the vena cava

  • The vein that carries blood from the body to the heart
  • The vein that carries blood from the lungs to the heart
  • The artery that carries blood from heart to the lungs

8. What is the name of the main artery carrying blood from the heart to the body?

  • Aorta
  • Hepea
  • Pulmonary Artery

9. How many separate circulation systems are there in the body and what are they for?

  • 2. One for the lungs and one for the body
  • 2. One for the brain and one for the body
  • 3. One for the brain, one for the lungs and one for the digestive system

10. What do white blood cells do?

  • They form part of the body’s defence system against microorganisms
  • They carry carbon dioxide around the body
  • They cause blood clots

11. How does blood flow through the heart?

  • Artery to atrium to ventricle
  • Vein to atrium to ventircle
  • Vein to ventricles to atrium
  • Artery to ventricles to atrium

12. What is blood made up of?

  • Plasma and red and white blood cells
  • Plasma, platelets and red and white blood cells
  • Platelets and red and white blood cells

13. What are platelets?

  • Empty cells
  • Small fragments of cell
  • Ribosomes

14. What is the heart?

  • an organ system
  • an organ
  • a tissue

15. Which vessel has thick walls containing muscle and elastic fibre?

  • Capillary
  • Artery
  • Vein

16. Where are valves found?

  • Veins
  • Arteries
  • Capillaries

17. How is carbon dioxide transported from organs to the lungs?

  • In blood plasma
  • In white blood cells
  • In the bronchioles

18. How is oxygen transported around the body?

  • In white blood cells
  • In red blood cells
  • In blood plasma