Adaptions for animals in transport

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  • Created by: Sfranp I
  • Created on: 04-03-16 14:15

1. Why is the endothelium lining smooth?

  • Just cause
  • To reduce friction and minimize the resistance of blood flow
  • To increase the rate of blood flow
  • So that the blood is kept at a low pressure
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Other questions in this quiz

2. What does the tunica media contain?

  • Elastic fibres and valves
  • Collagen fibres and valves
  • Smooth muscle and collagen fibres
  • Elastic fibres and smooth muscle
  • Collagen fibres and elastic fibres

3. The innermost layer of a blood vessel is called the...

  • endothelium
  • lumen
  • tunica media
  • tunica externa

4. What is the purpose of smooth muscle in blood vessels?

  • Smooth muscle regulates blood flow and maintains blood pressure
  • Increases blood flow

5. How thick is the endothelium lining?

  • One cell thick
  • Four cells thick
  • Half a cell thick
  • 2 cells thick


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