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6. At what pressure do arteries carry the blood?

  • High pressure
  • Unknown
  • Low pressure
  • Same pressure as capillaries

7. Blood flows at lower pressures in the veins than arteries.

  • True
  • Do not need to know
  • False
  • Depends on the person, so no answer

8. How does recoiling of arteries affect blood flow?

  • Maintains a smooth pressure
  • Has no effect on blood flow
  • Increase blood flow
  • Slow down blood flows

9. How do valves help the veins?

  • Prevent blood mixing with arteries
  • Reduced pressure of veins
  • Prevent back flow of blood
  • Increase blood flow

10. What 2 things do veins have that arteries dont?

  • Wider lumen and thin layer of muscle
  • Thick walls, wider lumen
  • thick walls and valves
  • FOLDED Endothelium and thin walls

11. Which blood vessel carries blood away from the heart?

  • Neurones
  • Arteries
  • Veins
  • just just flows by itself

12. Arteries have thick muscle which allows them to contract and change flow of blood. What term is used to describe this property?

  • Vascocontriction
  • Affinity
  • Homeostasis
  • Dilation

13. What does smooth endothelium allow veins to have?

  • Keep a concentration gradient
  • Prevent it from bursting
  • To be able to reduce friction
  • Reduced distance for diffusion of oxygen

14. What does thin layer of muscle prevent veins from doing?

  • Melting under high temperature of blood
  • Contracting
  • Bursting
  • shrinking

15. What blood vessels do we have around cells?

  • tissue fluid
  • No blood vessel
  • Capillaries
  • Arterioles