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

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