Emphysema
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Questions and Answers

What is emphysema characterized by?

  • Increased elasticity of lung tissue
  • Widespread destruction of the gas-exchanging tissues of the lungs (correct)
  • Inflammation of the lung lining
  • Overproduction of alveolar walls

    • What happens to the surface available for gas exchange in lungs affected by emphysema?

  • It remains unchanged
  • It is increased
  • It becomes more permeable
  • It is reduced (correct)

    • How does the expansion of lungs in emphysema affect airflow?

  • It improves gas exchange
  • It increases resistance to airflow (correct)
  • It decreases resistance to airflow
  • It has no effect on airflow

    • What causes the lungs to expand within the chest cage in emphysema?

    <p>Loss of elastic tissue from the walls of the destroyed alveoli</p> Signup and view all the answers

    What is the effect of muscle contraction during expiration in emphysema?

    <p>It further reduces the passage of air through the small bronchi</p> Signup and view all the answers

    What is emphysema characterized by?

    <p>Destruction of the gas-exchanging tissues of the lungs</p> Signup and view all the answers

    How does the expansion of lungs in emphysema affect airflow?

    <p>The expanded lungs compress the small bronchi and increase resistance to airflow</p> Signup and view all the answers

    What happens to the surface available for gas exchange in lungs affected by emphysema?

    <p>It is reduced due to loss of alveolar walls and destruction of alveolar capillaries</p> Signup and view all the answers

    What causes the lungs to expand within the chest cage in emphysema?

    <p>Loss of elastic tissue from the walls of the destroyed alveoli</p> Signup and view all the answers

    What is the effect of muscle contraction during expiration in emphysema?

    <p>It increases intrathoracic pressure and further reduces the passage of air through the small bronchi</p> Signup and view all the answers

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