Figure 36.18 Which of the following statements about the human eye is false? a. Rods detect color, while cones detect only shades of gray. b. When light enters the retina, it passes the ganglion cells and bipolar cells before reaching photoreceptors at the rear of the eye. c. The iris adjusts the amount of light coming into the eye. d. The cornea is a protective layer on the front of the eye.
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Which of the following statements are true of the physiology of vision? (Read carefully and select all the correct statements.) A. Cones are the receptors for color. B. The lens adjusts for distant vision, and the cornea adjusts for near vision. C. The optic nerve is formed by the ganglion neurons of the choroid layer. D. For near vision, the pupils dilate and the eyes converge. E. The optic chiasma is a crossing of optic nerve fibers that contributes to binocular vision. F. The visual areas are in the occipital lobes of the cerebrum. G. The area of the retina for the best color vision is the optic disc. H. Rods are most numerous at the periphery of the retina.
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Which statement about the cone cells in a human eye is not true? a. They are responsible for our sharpest vision. b. They are responsible for color vision. c. They are more sensitive to light than rods are. d They are fewer in number than rods. e. They exist in high numbers at the fovea.
Which of the following is the correct path for light rays entering the human eye? a. sclera, retina, choroid, lens, cornea b. fovea centralis, pupil, aqueous humor, lens c. cornea, pupil, lens, vitreous humor, retina d. optic nerve, sclera, choroid, retina, humors e. All of these are correct.
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