KROK 1 2017 – Question 142 · KROK (Medicine) · Histology, Cytology, and Embryology
A person with vitamin A deficiency develops twilight vision disturbance. Name the cells that fulfill this photoreceptor function:
- A. Rod cells
- B. Ganglionic nerve cells
- C. Horizontal cells of retina
- D. Cone cells
- E. Bipolar neurons
Hint
Think about which type of photoreceptor is sensitive enough to work in dim light and how vitamin A fits into its visual pigment.
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