Microbiology of Upper Respiratory Tract
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Questions and Answers

Which of the following is NOT a component of the normal microbiome of the pharynx and nasal cavity?

  • Streptococcus bacteria
  • Pseudomonas bacteria (correct)
  • Veillonella bacteria
  • Haemophilus bacteria
  • Among the following, which bacterium is known for being a potent lactate fermenter and nitrate reducer in the pharynx and nasal cavity?

  • Staphylococcus aureus
  • Veillonella parvula (correct)
  • Corynebacterium diphtheriae
  • Haemophilus influenzae
  • Which bacterium is associated with infections such as pneumonia, meningitis, and toxic shock syndrome in the upper respiratory tract?

  • Streptococcus pneumoniae
  • Staphylococcus aureus (correct)
  • Haemophilus influenzae
  • Pseudomonas aeruginosa
  • What type of hemolysis is associated with Streptococcus pneumoniae in the upper respiratory microbiome?

    <p>Alpha-hemolysis</p> Signup and view all the answers

    Which bacterium is known for requiring X factor (hemin) and V factor (NAD+) for growth in the upper respiratory tract?

    <p>Haemophilus influenzae</p> Signup and view all the answers

    Which of the following is NOT an infection associated with Staphylococcus aureus in the upper respiratory tract microbiome?

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

    Which bacterium is known for causing diphtheria in the upper respiratory microbiome?

    <p>Corynebacterium diphtheriae</p> Signup and view all the answers

    What type of bacteria is Propionibacterium acnes in the upper respiratory microbiome?

    <p>Gram-positive</p> Signup and view all the answers

    "Opportunistic pathogens abound" in the upper respiratory microbiome means that:

    <p><strong>Some</strong> bacteria in the microbiome are pathogenic under certain conditions.</p> Signup and view all the answers

    What type of microbiota is typically found in the lower respiratory system?

    <p>Free of resident microbiota</p> Signup and view all the answers

    Which bacterium is known for being a potent lactate fermenter and nitrate reducer in the upper respiratory tract?

    <p>Veillonella bacteria</p> Signup and view all the answers

    Which bacterium is associated with infections such as pneumonia, meningitis, and toxic shock syndrome in the upper respiratory tract?

    <p>Staphylococcus aureus</p> Signup and view all the answers

    Which bacterium is known for requiring X factor (hemin) and V factor (NAD+) for growth in the upper respiratory tract?

    <p>Haemophilus influenzae</p> Signup and view all the answers

    What type of hemolysis is associated with Alpha-hemolytic Streptococci in the upper respiratory microbiome?

    <p>Alpha-hemolysis</p> Signup and view all the answers

    What type of bacteria is Propionibacterium acnes in the upper respiratory microbiome?

    <p>Gram-positive Anaerobic</p> Signup and view all the answers

    What is the primary role of the mucociliary escalator in the respiratory system?

    <p>To remove mucus from the respiratory tract</p> Signup and view all the answers

    Study Notes

    Upper Respiratory Microbiome

    • Not a component of the normal microbiome of the pharynx and nasal cavity: TBD
    • Moraxella is a potent lactate fermenter and nitrate reducer in the pharynx and nasal cavity
    • Streptococcus pneumoniae is associated with infections such as pneumonia, meningitis, and toxic shock syndrome in the upper respiratory tract
    • Streptococcus pneumoniae is associated with Alpha-hemolytic hemolysis in the upper respiratory microbiome
    • Haemophilus influenzae requires X factor (hemin) and V factor (NAD+) for growth in the upper respiratory tract
    • Not an infection associated with Staphylococcus aureus in the upper respiratory tract microbiome: TBD
    • Corynebacterium diphtheriae is associated with causing diphtheria in the upper respiratory microbiome
    • Propionibacterium acnes is a type of Gram-positive, anaerobic bacterium in the upper respiratory microbiome

    Opportunistic Pathogens

    • "Opportunistic pathogens abound" in the upper respiratory microbiome means that pathogens can cause disease when the host's defenses are compromised

    Lower Respiratory System

    • Typically found in the lower respiratory system: Sterile microbiota

    Mucociliary Escalator

    • The primary role of the mucociliary escalator in the respiratory system is to remove debris and pathogens from the airways

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    Description

    This quiz covers the microbiology of the upper respiratory tract, including the mucociliary escalator, alveolar macrophages, and the microbiome of the nose, nasal cavity, and pharynx. It also discusses the absence of resident microbiota in the lower respiratory system.

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