Blood Vessels

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  • Created by: issyafd1
  • Created on: 30-04-16 14:15

1. What is the function of valves?

  • Ensure the blood is flowing very fast
  • To prevent backflow
  • Prevent carbon dioxide diffusing into tissues
  • Ensure all oxygen diffuses from the blood
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Other questions in this quiz

2. Which is not a way in which blood flow is maintained in the veins?

  • One way valves to prevent backflow
  • Breathing movements of the chest act as a pump forcing blood towards the heart
  • Elastic recoil
  • Muscles contract squeezing the veins forcing blood towards the heart

3. Which is NOT an adaption of the capillaries?

  • Rough lining
  • Walls which are 1 cell thick
  • Bigger cross sectional area than the artery supplying them
  • Large surface area for diffusion

4. What is the function of arterioles?

  • Prevent the diffusion of excess water
  • Remove tissue fluid
  • Constrict and dilate to control blood flow to individual organs
  • Link capillaries and veins

5. What are capillary walls made of?

  • Collagen and endothelium
  • Elastic Fibres
  • 1 cell thick endothelium
  • Endothelium and smooth muscle




Tech problems, plz check

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