KROK 1 2009 – Question 105 · KROK (Medicine) · Physiology

An experimental animal has lost orientative reflexes as a result of destruction of certain brainstem structures. What structures had been destroyed?

  1. A. Black substance
  2. B. Red nuclei
  3. C. Vestibular nuclei
  4. D. Medial nuclei of the reticular formation
  5. E. Quadrigeminal plate
Hint

Ask which brainstem centre integrates visual and auditory inputs for turning towards a sudden stimulus, as opposed to centres for tone, posture or balance.

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