Neurology Quiz #20: Vagus Nerve Anatomy and Pathology

1. A 54-year-old man presents to the clinic complaining of difficulty swallowing and a hoarse voice that has persisted for several months. Physical examination reveals a decreased gag reflex. Which of the following cranial nerves is most likely affected in this patient? 

Question 1 of 5

2. During a surgery in the neck region, a surgeon accidentally damages a nerve that results in the loss of parasympathetic innervation to the heart, lungs, and gastrointestinal tract. Which of the following nerves is most likely injured? 

Question 2 of 5

3. A 60-year-old man with a history of smoking and alcohol abuse presents with unilateral loss of taste sensation on the posterior third of the tongue and a voice change that has been progressing over the past few months. Upon examination, an ulcerative lesion is found in the oropharynx. Which nerve is most likely affected by the lesion? 

Question 3 of 5

4. A patient presents with a persistent dry cough, hoarseness, and difficulty breathing after undergoing thyroidectomy. Which of the following complications is most likely responsible for these symptoms? 

Question 4 of 5

5. During a routine physical examination, a 45-year-old woman is found to have an elevated resting heart rate. She also reports frequent episodes of diarrhea and sweating. Which of the following nerves is most likely involved in the modulation of these symptoms?

Question 5 of 5


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