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milo3toe milo3toe
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6 years ago
The circadian rhythm is reset by input from special ganglion cells in the retina. These ganglion cells are unusual in that they ____.
 
  a. receive input from only cones, not rods
  b. are located only in a doughnut-shaped band surrounding the fovea
   c. respond directly to light, but respond very slowly
  d. become active only at night or in very dim light
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6 years ago
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