Understanding Mucociliary Clearance in Lung Epithelium
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Questions and Answers

What is the function of the airways in the respiratory system?

  • Filtering carbon dioxide
  • Absorbing oxygen
  • Producing red blood cells
  • Transporting air (correct)
  • How are foreign particles cleared from the airways?

  • By diffusion into the alveoli
  • By attaching to red blood cells
  • By being coughed out or carried upward by small hairs (correct)
  • By converting into oxygen
  • What is the purpose of respiratory gas conditioning?

  • Adding more foreign particles
  • Filtering out oxygen
  • Cooling the respiratory gas
  • Warming, humidifying, and purifying the respiratory gas (correct)
  • Why is artificial respiratory humidification important for mechanically ventilated patients?

    <p>To prevent lung damage and infections</p> Signup and view all the answers

    Which mechanism removes large foreign particles from the airways?

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

    What consequence may occur if natural respiratory humidification fails in the body?

    <p>Pulmonic infections and lung tissue damage</p> Signup and view all the answers

    What is the percentage of respiratory gas conditioning that takes place in the upper respiratory tract in a healthy person?

    <p>75%</p> Signup and view all the answers

    How does the warming of breathing air occur in the upper respiratory tract?

    <p>Via small blood vessels in the nasal and oral mucous membrane</p> Signup and view all the answers

    What happens to the mucous membranes during exhalation in a healthy adult person?

    <p>They cool down</p> Signup and view all the answers

    Why is humidification necessary during invasive mechanical ventilation?

    <p>To prevent bronchospasm</p> Signup and view all the answers

    What can occur if the upper airway is bypassed during invasive mechanical ventilation?

    <p>Thickening of airway secretions leading to ET tube occlusion</p> Signup and view all the answers

    During inspiration, what do well-vascularized mucous membranes inside the nose and mouth release to the passing respiratory gas?

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

    What is the main function of mucociliary clearance in the lung epithelium?

    <p>To clear respiratory pathogens</p> Signup and view all the answers

    Which component of the airways is responsible for propelling the fluid and mucus layer from distal to proximal lung airways?

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

    What can happen if mucociliary clearance is impaired in the airways?

    <p>Formation of plaques and plugs in the airways</p> Signup and view all the answers

    Which part of the respiratory system has a higher number of ciliated cells?

    <p>Upper airways</p> Signup and view all the answers

    What kind of defects can impair mucociliary clearance in the airways?

    <p>Congenital or acquired defects in ciliary function</p> Signup and view all the answers

    Besides mucus secretion by the epithelium, what else helps in maintaining proper mucociliary clearance in the proximal airways?

    <p>Presence of submucosal glands secreting fluid and mucus</p> Signup and view all the answers

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