Other questions in this quiz

2. What do valves do?

  • Prevent the blood from flowing backwards
  • Open and close
  • Let the blood flow in and out both ways
  • Stop blood entering the heart

3. What do the two atria do?

  • Pump blood
  • Store blood
  • Collect blood
  • Produce blood

4. Which blood vessel has valves?

  • Veins
  • Arteries
  • Capillaries

5. Which circuit carries blood to the lungs to be oxygenated?

  • Systemic
  • Systetic
  • Kintemic
  • Pulmonary


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