KROK 1 2017 – Question 131 · KROK (Medicine) · Physiology
Pupil dilation occurs when a person steps from a light room into a dark one. What reflex causes such a reaction?
- A. Sympathetic unconditioned reflex
- B. Sympathetic conditioned reflex
- C. Parasympathetic unconditioned reflex
- D. Parasympathetic conditioned reflex
- E. Metasympathetic reflex
Hint
Consider which autonomic division controls the iris dilator muscle, and whether the response is innate or has to be learned.
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