Blood Vessels

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

1. What is the function of valves?

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

2. Why do capillaries in the brain have tight junctions?

  • To prevent fluid on the brain
  • Prevent the drainage of brain fluid
  • To prevent essential minerals diffusing into the capillaries
  • Ensure that oxygen does not diffuse back into the capillaries

3. What is the blood pressure in the veins?

  • Medium
  • Very low
  • Very high
  • Greater than the arteries

4. What do artery walls contain?

  • Collagen and elastic fibres only
  • Elastic fibres, smooth muscle and collagen
  • Elastic fibres and smooth muscle only
  • Elastic fibres and collagen only

5. What is the function of arterioles?

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

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