Anatomy & Physiology
1st Edition
ISBN: 9781938168130
Author: Kelly A. Young, James A. Wise, Peter DeSaix, Dean H. Kruse, Brandon Poe, Eddie Johnson, Jody E. Johnson, Oksana Korol, J. Gordon Betts, Mark Womble
Publisher: OpenStax College
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Textbook Question
Chapter 14, Problem 28CTQ
Why does the blind spot from the optic disc in either eye not result in a blind spot in the visual field?
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Why does the blind spot from the optic disc in either eye not result in a blind spot in the visual field?
Three patients have suffered destruction of different portions of their visual pathway. Patient 1 has lost the right optic tract, patient 2 has lost the nerve fibers that cross at the optic chiasm, and patient 3 has lost the left occipital lobe. Draw a picture of what each person would perceive through each eye when looking at a white wall.
Despite the presence of the blind spot, you do not consciously experience a “hole” in your vision. Why not?
Chapter 14 Solutions
Anatomy & Physiology
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Ch. 14 - Watch this video...Ch. 14 - What type of receptor cell is responsible for...Ch. 14 - Which of these cranial nerves is part of the...Ch. 14 - Which submodality of taste is sensitive to the pH...Ch. 14 - Axons from which neuron in the retina make up the...Ch. 14 - What type of receptor cell is involved in the...Ch. 14 - Which of these sensory modalities does not pass...Ch. 14 - Which nucleus in the medulla is connected to the...Ch. 14 - Visual stimuli in the upper-left visual field will...Ch. 14 - Which location on the body has the largest region...Ch. 14 - Which of the following is a direct target of the...Ch. 14 - Which region of the frontal lobe is responsible...Ch. 14 - Which exuapyramidal tract incorporates equilibrium...Ch. 14 - Which region of gray matter in the spinal cord...Ch. 14 - What type of reflex can protect the foot when a...Ch. 14 - What is the name for the topographical...Ch. 14 - The sweetener known as stevia can replace glucose...Ch. 14 - Why does the blind spot from the optic disc in...Ch. 14 - Following a motorcycle accident, the victim loses...Ch. 14 - A pituitary tumor can cause perceptual losses in...Ch. 14 - The prefrontal lobotomy is a drastic—and largely...Ch. 14 - If a reflex is a limited circuit within the...
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- What is meant by the statement Vision happens mainly in the brain?arrow_forwardLarry goes to the doctor complaining that he cant see the right side of the visual field with either eye. Where in the visual signal-processing pathway is Larrys problem occurring?arrow_forwardHow do somatic sensations differ from special senses?arrow_forward
- Why doesn't the blind spot interfere with our normal vision?arrow_forwardWhat are the three illogical characteristics of the visual system?arrow_forwardThere are a number of reasons for vision loss, both natural and unnatural. Use a blindfold to remove your sense of vision. how well your other senses adapt to the lack of visual input. How familiar is it? How does your perception of distance change?arrow_forward
- Why does the blind spot from the optic disc in either eye not result in a blind spot in the visual field? Your answer:arrow_forwardPresbyopia is a condition in which a person loses part or all of their capacity to adapt to changes in visual acuity. Will she still need reading glasses after having LASIK to fix her far vision? Explain.arrow_forwardAnatomically, what causes a blind spot on the retina?arrow_forward
- A female child, age 6, is brought to the health clinic for a routine checkup. To assess the child’s vision, the nurse should ask: “Do you have any problems seeing different colors?” “Do you have trouble seeing at night?” “Do you have problems with glare?” “How are you doing in school?”arrow_forwardIf a patient suffers visual impairment only in one eye, why must the damage be located in the visual pathway prior to the optic chiasma?arrow_forwardPresbyopia is a condition in which a person's ability to adjust to changes in visual acuity diminishes or disappears entirely. Will she still require reading glasses after LASIK to correct her far vision? Explain.arrow_forward
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Visual Perception – How It Works; Author: simpleshow foundation;https://www.youtube.com/watch?v=DU3IiqUWGcU;License: Standard youtube license