| 21. | Rod cells are the ones responsible for night vision, and cone cells are responsible for color vision.
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| 22. | At lower light levels, where only the rod cells function, the sensitivity is greatest at a blueish-green wavelength.
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| 23. | When these channels close, the rod cell produces less neurotransmitter, which is perceived by the brain as light.
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| 24. | Rod cells, which are concentrated further away from the fovea, operate better than cone cells in low light.
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| 25. | In very low light levels, vision is scotopic : light is detected by rod cells of the retina.
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| 26. | Rod cells in the depolarized state constantly release neurotransmitters which in turn stimulate the nerves associated with rod cells.
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| 27. | The large number of rod cells in the retina facilitate night vision, and there is an efficient olfactory system.
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| 28. | This is known as the Mizuo-Nakamura phenomena and is thought to be caused by the overstimulation of rod cells.
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| 29. | Some of the deeper water fish have tubular eyes with big lenses and only rod cells that look upwards.
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| 30. | Rod cells in the depolarized state constantly release neurotransmitters which in turn stimulate the nerves associated with rod cells.
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