Human Respiratory System Quiz
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Questions and Answers

What is the role of elastic cartilage in the epiglottis of elderly individuals?

  • It remains unchanged throughout life.
  • It becomes more elastic with age.
  • It is reduced in size and replaced by adipose tissue. (correct)
  • It is replaced by bone tissue.

    • What type of muscle is present in the vocal cords?

  • Involuntary muscle
  • Cardiac muscle
  • Smooth muscle
  • Striated skeletal muscle (correct)

    • What type of epithelium lines the vocal cords?

  • Simple cuboidal epithelium
  • Non keratinized stratified squamous epithelium (correct)
  • Keratinized columnar epithelium
  • Stratified squamous epithelium

    • Which of the following best describes the structure that supports the vocal cords?

    <p>Elastic ligaments that allow for flexibility</p> Signup and view all the answers

    What happens to elastic cartilage in the epiglottis as individuals age?

    <p>It diminishes and is often replaced by fat.</p> Signup and view all the answers

    Why does foreign body aspiration occur more frequently in the right lung?

    <p>The right bronchus is shorter and straighter.</p> Signup and view all the answers

    What are secondary and tertiary bronchi categorized as?

    <p>Intrapulmonary bronchi</p> Signup and view all the answers

    Which statement accurately describes the bronchi?

    <p>Secondary bronchi arise from the primary bronchi.</p> Signup and view all the answers

    Which factor is least likely to affect foreign body aspiration rates in the lungs?

    <p>The presence of allergens</p> Signup and view all the answers

    Which lung structure is primarily involved in the bronchial division?

    <p>Intrapulmonary bronchi</p> Signup and view all the answers

    What type of muscle separates the lamina propria from the submucosa in the intrapulmonary bronchi?

    <p>Smooth muscle</p> Signup and view all the answers

    Which glands are found in the submucosa of the intrapulmonary bronchi?

    <p>Seromucous glands</p> Signup and view all the answers

    What type of epithelium lines the intrapulmonary bronchi?

    <p>Respiratory epithelium</p> Signup and view all the answers

    What is the primary structural support found in each intrapulmonary bronchus?

    <p>Skeletal support</p> Signup and view all the answers

    Which layer is located between the lamina propria and the bronchial glands in the intrapulmonary bronchi?

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

    What happens to the airway diameter as the bronchi branch?

    <p>It decreases</p> Signup and view all the answers

    What structural change occurs to the cartilage in the bronchi as they branch?

    <p>It decreases in amount</p> Signup and view all the answers

    As the bronchi branch, what happens to the number of goblet cells?

    <p>It decreases</p> Signup and view all the answers

    Which type of tissue increases in amount as the bronchi continue branching?

    <p>Smooth muscle</p> Signup and view all the answers

    In the branching bronchi, how does the height of epithelial cells change?

    <p>It decreases</p> Signup and view all the answers

    What structural characteristic distinguishes alveolar sacs from respiratory bronchioles?

    <p>More alveoli and cuboidal epithelium</p> Signup and view all the answers

    How is an alveolar sac defined?

    <p>Two or more alveoli sharing a common opening</p> Signup and view all the answers

    What is the primary function of alveoli in the respiratory system?

    <p>Facilitate gas exchange</p> Signup and view all the answers

    Which of the following best describes the end structure of the respiratory bronchioles?

    <p>They end as blind pouches with alveolar sacs</p> Signup and view all the answers

    Which type of epithelium is primarily found on the walls of alveolar sacs?

    <p>Cuboidal epithelium</p> Signup and view all the answers

    What percentage of the alveolar wall is made up of the cells that bulge into the air space?

    <p>3% to 5%</p> Signup and view all the answers

    Where do these bulging cells primarily sit in relation to the alveoli?

    <p>At the corner of the alveoli</p> Signup and view all the answers

    What structure do these cells contain in their cytoplasm?

    <p>Lamellar bodies</p> Signup and view all the answers

    What feature do these cells have on their apical surfaces?

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

    What is the primary function of the cells that bulge into the air space?

    <p>Surfactant production</p> Signup and view all the answers

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