Other questions in this quiz

2. What does the pulmonary artery do?

  • Pump deoxygenated blood to the lungs
  • bring deoxygenated blood back from the body
  • pump oxygenated blood to the body
  • bring oxygenated blood back from the lungs

3. Why does the left ventricle have thicker walls than the right ventricle?

  • needs to contract powerfully to pump blood all the way round the body but right side only needs to get blood to the lungs, which are nearby
  • less well supported

4. Why do arteries have elastic tissue in the walls?

  • in case of damage
  • to cope with the high pressure caused by the heartbeat
  • to expand in case of clot

5. If there is higher pressure behind a valve, is it forced open or shut?

  • open
  • shut

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