Papilledema & Papillitis - Optic Nerve Anatomy Quiz
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Questions and Answers

What is the primary cause of papilledema according to the text?

  • Ischemia
  • Optic nerve abnormalities
  • Inflammation
  • Increased intracranial pressure (correct)
  • Which of the following is NOT a cause of increased intracranial pressure mentioned in the text?

  • Glaucoma (correct)
  • Encephalitis
  • Brain tumor
  • Subdural hematoma
  • What is the range of normal cerebrospinal fluid (CSF) pressure according to the text?

  • 150-350 mmH2O
  • 200-400 mmH2O
  • 50-150 mmH2O
  • 100-250 mmH2O (correct)
  • Which of the following is NOT a cause of optic disc swelling mentioned in the text?

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

    What is the primary difference between papilledema and pseudopapilledema according to the text?

    <p>Papilledema is caused by increased intracranial pressure, while pseudopapilledema is caused by optic nerve abnormalities.</p> Signup and view all the answers

    Which of the following is NOT a characteristic of optic disc drusen according to the text?

    <p>They are typically associated with increased intracranial pressure.</p> Signup and view all the answers

    Which of the following best describes the location of the optic nerve?

    <p>It extends from the lamina cribrosa to the optic chiasma.</p> Signup and view all the answers

    What is the approximate length of the intraorbital portion of the optic nerve?

    <p>25 mm</p> Signup and view all the answers

    Which of the following meningeal sheaths does NOT cover the optic nerve?

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

    Which part of the optic nerve is continuous with the meningeal spaces in the brain?

    <p>Intracranial portion</p> Signup and view all the answers

    What is the normal cup-to-disc ratio of the optic disc?

    <p>1:3 or 0.3</p> Signup and view all the answers

    What is the approximate diameter of the optic disc?

    <p>1.5 mm</p> Signup and view all the answers

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