The Ultimate Human Heart Quiz
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Questions and Answers

In humans, where is the heart located?

  • Behind the liver in the abdominal cavity
  • Above the stomach in the abdominal cavity
  • Between the lungs in the mediastinum (correct)
  • In the upper chest, near the shoulders

    • How many chambers does the heart of most reptiles have?

  • Five chambers
  • Three chambers (correct)
  • Four chambers
  • Two chambers

    • What prevents backflow of blood in the heart?

  • Pericardium
  • Heart valves (correct)
  • Pacemaker cells
  • Blood vessels

    • What determines the rhythm of blood pumping in the heart?

    <p>Pacemaker cells in the sinoatrial node</p> Signup and view all the answers

    What are the three layers that make up the wall of the heart?

    <p>Epicardium, myocardium, and endocardium</p> Signup and view all the answers

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