Elastic arteries such as the aorta have many elastic fibres so that they

  1. exchange substances
  2. stretch and recoil to smooth out pressure surges
  3. can constrict to control flow
  4. have valves
Answer

B) stretch and recoil to smooth out pressure surges

Elastic recoil maintains pressure. AS & A Level Biology · Topic 8 Transport in Mammals · 8.1 The circulatory system

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