KROK 1 2016 – Question 67 · KROK (Medicine) · Physiology

Due to destruction of certain structures of the brainstem an animal has lost its orientation reflexes in response to strong light stimuli. What structures were destroyed?

  1. A. Posterior quadrigeminal bodies
  2. B. Anterior quadrigeminal bodies
  3. C. Vestibular nuclei
  4. D. Substantia nigra
  5. E. Red nuclei
Hint

Think about which midbrain centres handle orienting responses and which sensory modality each one serves.

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