Neurology Quiz #19: Brain Stem Anatomy and Pathology

1. A 32-year-old man presents with difficulty swallowing and a hoarse voice following a motorcycle accident. Physical examination reveals decreased gag reflex on the right side. Which cranial nerve is most likely injured? 

Question 1 of 5

2. A 45-year-old woman presents with double vision and a right-sided ptosis. On examination, her right eye is abducted and depressed, and she is unable to move it medially or vertically. Which of the following cranial nerves is most likely affected? 

Question 2 of 5

3. A patient presents with a loss of pain and temperature sensation on the left side of the face and the right side of the body. These findings suggest a lesion in which part of the brainstem? 

Question 3 of 5

4. A 55-year-old man presents with vertigo, nausea, and unsteady gait. Examination also reveals a loss of corneal reflex on the right side. These findings most likely suggest a lesion in which structure? 

Question 4 of 5

5. During a neurology rotation, a medical student notes that a patient cannot abduct her left eye and has difficulty chewing on the same side. This combination of symptoms suggests a lesion involving which of the following pairs of cranial nerves? 

Question 5 of 5


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