Xerostomia Mechanism Quiz
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Questions and Answers

What is the most likely mechanism for the man's xerostomia?

  • Decrease in mucin concentration associated with CN IX damage (correct)
  • Increase in water concentration associated with sympathetic nerve damage
  • Increase in mucin concentration associated with CN IX damage
  • Decrease in mucin concentration associated with sympathetic nerve damage

    • What is the clinical manifestation of this man's xerostomia?

  • High saliva volume and low viscosity
  • High saliva volume and high viscosity
  • Low saliva volume and low viscosity
  • Low saliva volume and high viscosity (correct)

    • Which nerve is likely implicated in the development of the man's xerostomia?

  • CN V (Trigeminal nerve)
  • CN VII (Facial nerve)
  • CN X (Vagus nerve)
  • CN IX (Glossopharyngeal nerve) (correct)

    • What is the most likely cause of the man's xerostomia following radiation treatment?

    <p>Decrease in mucin concentration associated with CN IX damage</p> Signup and view all the answers

    What is the role of the glossopharyngeal nerve (CN IX) in the development of xerostomia following radiation treatment?

    <p>Activation of salivary glands</p> Signup and view all the answers

    How does radiation treatment likely affect the salivary glands, leading to xerostomia?

    <p>Stimulation of glossopharyngeal nerve (CN IX) activity causing a decrease in mucin concentration</p> Signup and view all the answers

    What is the most likely mechanism for the man's xerostomia?

    <p>Decrease in mucin concentration associated with CN IX damage</p> Signup and view all the answers

    Which nerve damage is most likely responsible for the development of the man's xerostomia?

    <p>CN IX damage</p> Signup and view all the answers

    What is the role of sympathetic nerve damage in the development of xerostomia?

    <p>Increases water concentration in saliva</p> Signup and view all the answers

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