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

Which mechanism removes large foreign particles from the airways?

<p>Coughing (B)</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 (A)</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% (D)</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 (D)</p> Signup and view all the answers

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

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

Why is humidification necessary during invasive mechanical ventilation?

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

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

<p>To clear respiratory pathogens (D)</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 (D)</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 (B)</p> Signup and view all the answers

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

<p>Upper airways (C)</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 (D)</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 (A)</p> Signup and view all the answers

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