Human Heart Chambers and Blood Circulation Quiz
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Questions and Answers

What is the function of the chambers in the heart?

  • To ensure deoxygenated blood is pumped out to the body
  • To transport carbon dioxide to the lungs
  • To mix oxygen-rich blood with deoxygenated blood
  • To prevent the mixing of oxygen-rich blood with carbon dioxide-rich blood (correct)

    • What is the role of the left atrium in the heart?

  • Expands to transfer oxygenated blood to the left ventricle (correct)
  • Contracts to pump blood to the lungs
  • Relaxes to pump blood to the body
  • Dilates to collect deoxygenated blood

    • Why do ventricles have thicker muscular walls than atria?

  • To prevent mixing of deoxygenated blood with oxygenated blood
  • To transfer blood to the left atrium
  • To pump blood into various organs (correct)
  • To pump blood to the lungs

    • Which chamber in the heart contracts to pump oxygen-rich blood to the body?

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

    What happens in the right atrium as it expands?

    <p>It expands to receive deoxygenated blood</p> Signup and view all the answers

    What is the function of valves in the heart?

    <p>To prevent backward flow when chambers contract</p> Signup and view all the answers

    What happens when the left ventricle contracts?

    <p>Blood is pumped out to the body</p> Signup and view all the answers

    What is the purpose of transferring carbon dioxide-rich blood to the lungs?

    <p>To remove carbon dioxide from the lungs for exhalation</p> Signup and view all the answers

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