KROK 1 2008 – Question 62 · KROK (Medicine) · Pharmacology
An ophthalmologist used a 1% mesaton solution for the diagnostic purpose (pupil dilation for eye-ground examination). What is the cause of mydriasis induced by the drug?
- A. Activation of β1 adrenoreceptors
- B. Activation of α1 adrenoreceptors
- C. Activation of α2 adrenoreceptors
- D. Activation of M-cholinoreceptors
- E. Block of α1 adrenoreceptors
Hint
Think about which adrenoreceptor type sits on the radial (dilator) muscle of the iris and what happens when a sympathomimetic stimulates it.
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