How Do the Heart and Lungs Work?
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Questions and Answers

What is the main function of the heart?

  • To pump blood to the body cells only.
  • To pump blood to the lungs only.
  • To filter oxygen from the blood.
  • To pump blood to both the lungs and body cells. (correct)

    • Which chamber of the heart receives oxygen-poor blood from the body?

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

    • Where does oxygenated blood from the lungs enter the heart?

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

    • Which statement about blood oxygen levels affecting its color is true?

    <p>The amount of oxygen in the blood does not affect its color.</p> Signup and view all the answers

    What type of blood does the right side of the heart pump to the lungs?

    <p>Deoxygenated blood</p> Signup and view all the answers

    From which side of the heart does oxygenated blood go to the organs of the body?

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

    What is the color of blood that has lost its oxygen?

    <p>Dark red</p> Signup and view all the answers

    What is the primary reason for breathing?

    <p>To produce energy for cells</p> Signup and view all the answers

    During inhalation, what happens to the diaphragm?

    <p>It contracts, pulling down on the chest cavity</p> Signup and view all the answers

    Which part of our body releases carbon dioxide into the bloodstream for removal?

    <p>Lungs</p> Signup and view all the answers

    How does deep breathing affect stress levels?

    <p>Promotes relaxation and lowers stress levels</p> Signup and view all the answers

    What is the average duration of a single breath?

    <p>4-6 seconds</p> Signup and view all the answers

    What is the role of oxygen in cellular metabolism?

    <p>Aids in the breakdown of glucose</p> Signup and view all the answers

    Which part of the body contracts during exhalation?

    <p>Diaphragm</p> Signup and view all the answers

    What is the primary function of inhalation?

    <p>Supplying oxygen to cells</p> Signup and view all the answers

    How does carbon dioxide leave our body?

    <p>Through exhalation</p> Signup and view all the answers

    What happens when the diaphragm relaxes during breathing?

    <p>Pushes air out of lungs</p> Signup and view all the answers

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