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 (C)</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 (B)</p> Signup and view all the answers

What is emphysema characterized by?

<p>Destruction of the gas-exchanging tissues of the lungs (B)</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 (C)</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 (A)</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 (D)</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 (D)</p> Signup and view all the answers

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