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Chapter 7: The Visual System
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Which of the following statements best describes how a visual image is transmitted upon the retinal surface by the lens?
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A. The visual image is projected onto the retina without distortion.
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B. The image is reversed, from right to left only.
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C. The image is reversed from right to left and inverted from top to bottom.
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D. The image is inverted, from top to bottom.
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Retinal ganglion cell axons leave the eye at the
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A patient is blind in one eye. Which of the following does not describe the patient’s visual fields?
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A. The visual field of the sighted eye corresponds precisely to one hemifield in a normally sighted individual.
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B. The monocular crescent of the sighted eye is not affected by blindness in the other eye.
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C. There is a loss of overlap of the two visual fields.
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D. The visual field of the sighted eye extends beyond the midline.
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Comment: The visual field of each eye normally extends beyond the midline, so that there is a central region of binocular overlap when the visual fields of each are are considered together. The monocular crescents of each eye are independent; they do not overlap with the other. That is why they are called monocular.
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The pigment epithelium of the eye serves which of the following functions?
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A. Site of firm attachment of the retina
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D. Vascular support for the retina
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Which of the following best describes the retinal location of all ganglion cells that send their axon across the midline in the optic chiasm?
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The lateral geniculate nucleus receives input from
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