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dsvcbhdjnskl dsvcbhdjnskl
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6 years ago
The entrainment of circadian rhythms by visual zeitgebers is mediated by
 
  A) part of the optic nerve.
  B) the retinohypothalamic tract.
  C) a rare type of retinal ganglion cell.
  D) all of the above
  E) both A and C
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wrote...
6 years ago
Answer: D
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