Final Jeopardy
A neurologist notes that a patient consistently fails to generate a normal reflexive saccadic eye and head movement in response to a startling peripheral visual stimulus. The patient does, however, perform normal reflexive turning of their head in response to a startling auditory stimulus, indicating intact midbrain motor output. Name the specific arterial supply to the cell bodies of neurons where retrograde chromatolysis would be observed, assuming no other deficits.
Answer: Central retinal arteries
The tectospinal tract mediates reflexive turning of the head and originates in the superior colliculus, which receives direct sensory input from retinal ganglion cells supplied by the central retinal arteries. The macula