Neurology Quiz #39: Brain Herniation and Motor Neuron Signs

1. A 45-year-old man with a recent history of head trauma is brought to the emergency department due to sudden onset of headache, vomiting, and drowsiness. On examination, he presents with right pupil dilation and lack of response to light. Which type of herniation is most likely responsible for these findings? 

Question 1 of 5

2. A patient presents with flaccid paralysis and decreased reflexes in the left arm. MRI shows a lesion in the anterior horn of the spinal cord on the same side. Which type of motor neuron is most likely affected by the lesion? 

Question 2 of 5

3. A 53-year-old woman with a brain tumor develops sudden respiratory arrest. Imaging shows a mass effect causing downward displacement of the brainstem. Which type of herniation is most likely responsible for her condition? 

Question 3 of 5

4. A 32-year-old man presents with weakness of the right upper and lower limbs, hyperreflexia, and a positive Babinski sign on the right side. Imaging does not show any spinal cord abnormalities. Which location is most likely affected by the lesion causing his symptoms? 

Question 4 of 5

5. A patient with increased intracranial pressure due to a large intracerebral hemorrhage shows signs of downward brainstem displacement. Which clinical finding would most specifically suggest imminent risk of central herniation? 

Question 5 of 5


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