Human Heart Chambers and Blood Circulation
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Questions and Answers

What happens when the left atrium contracts in the heart?

  • Blood is pumped out to the body
  • Blood is transferred to the left ventricle (correct)
  • De-oxygenated blood is collected
  • Valves ensure blood flow backwards

    • Why does the heart have different chambers?

  • To regulate the heartbeat rhythm
  • To ensure that blood only flows to the lungs
  • To prevent oxygenated blood from mixing with de-oxygenated blood (correct)
  • To maintain the body temperature

    • Which chamber of the heart receives oxygen-rich blood from the lungs?

  • Left ventricle
  • Left atrium (correct)
  • Right ventricle
  • Right atrium

    • Why do ventricles have thicker muscular walls compared to atria?

    <p>To pump blood into various organs</p> Signup and view all the answers

    What is the function of valves in the heart?

    <p>To prevent blood from flowing backwards when chambers contract</p> Signup and view all the answers

    Which chamber of the heart dilates as the right atrium contracts?

    <p>Right ventricle</p> Signup and view all the answers

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