Other questions in this quiz

2. What do the elastic fibres in arteries allow?

  • Stretching- to accomadate changes in blood flow and pressure
  • Elastic fibres reduce friction
  • Structure
  • Diffusion

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

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

4. Why is the endothelium lining smooth?

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

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

  • tunica externa
  • endothelium
  • tunica media
  • lumen

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