KROK 1 2015 – Question 4 · KROK (Medicine) · Physiology
A laboratory experiment on a dog was used to study central parts of auditory system. One of the mesencephalon structures was destroyed. The dog has lost the orienting response to auditory signals. What structure was destroyed?
- A. Inferior colliculi of corpora quadrigemina
- B. Superior colliculi of corpora quadrigemina
- C. Red nucleus
- D. Reticular formation nuclei
- E. Substantia nigra
Hint
Consider how the roof of the midbrain divides sensory orienting reflexes between hearing and vision, and which part serves hearing.
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