Biology: The Unity and Diversity of Life (MindTap Course List)
14th Edition
ISBN: 9781305073951
Author: Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher: Cengage Learning
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Textbook Question
Chapter 33, Problem 11SQ
Visual accommodation involves adjustment to the shape or position of the ___ .
- a. conjunctiva
- b. retina
- c. orbit
- d. lens
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The ability of your eyes to focus diffrentially for obejcts of near vision (less than 20ft) is called ______.
A.
presbyopia
B.
accomodation
C.
visual acuity
D.
refractive index
For individuals that focuses an image in front of the retina, meaning they can see close objects normally, but distant objects are blurred or seen indistinctly, this condition is called _______.
A.
myopia
B.
emmetropic
C.
hyperopia
D.
presbyopia
Irregularities in the curvatures of the lens and/or the cornea that lead to blurred vision problem is called ______.
A.
depth perception
B.
refraction
C.
emmetropic
D.
astigmatism
A patient has lost vision on the left side of both eyes. The patient has likely suffered damage to ________.
a.the right optic tract
b.the retinas of the eyes
c.the optic chiasm
d. the optic nerves
Match the function or definition to the structure:
_____ A. Lens 1. Has pigment producing cells and blood vessels, keeps inside eye dark
_____ B. sclera 2. The colored part of the eye, which controls amount of light entering
_____ C. retina 3. Area where the nerve fibers from retina converge and leave eye
_____ D. fovea centralis 4. Region of the retina that provides the sharpest vision
_____ E. iris 5. Transparent structure found in eye and held in place by ligaments
_____ F. optic disc 6. White portion of the eye is the outer layer
_____ G. choroid coat 7. Inner layer of the eye which contains the photoreceptors
Chapter 33 Solutions
Biology: The Unity and Diversity of Life (MindTap Course List)
Ch. 33 - The pain of heartburn is an example of a ___ . a....Ch. 33 - ___ is defined as a decrease in the response to an...Ch. 33 - Which is a somatic sensation? a. taste b. smell c....Ch. 33 - Chemoreceptors play a role in the sense of ___ ....Ch. 33 - In the ___, neurons are arranged like maps that...Ch. 33 - Mechanoreceptors in the ___ send signal, to the...Ch. 33 - The middle ear functions in__________. a....Ch. 33 - Prob. 8SQCh. 33 - Occupational Hearing Loss Frequent exposure to...Ch. 33 - Occupational Hearing Loss Frequent exposure to...
Ch. 33 - Occupational Hearing Loss Frequent exposure to...Ch. 33 - Occupational Hearing Loss Frequent exposure to...Ch. 33 - The organ of Corti contains receptors that signal...Ch. 33 - Night vision begins with stimulation of ___ . a....Ch. 33 - Visual accommodation involves adjustment to the...Ch. 33 - When you view a close object, your lens gets ___ ....Ch. 33 - Defective or missing ___ cause mJor blindness. a....Ch. 33 - ___ causes the pupil to widen. a. Low light b....Ch. 33 - Match each structure with its description. _____...Ch. 33 - Like other nocturnal carnivores, the ferret shown...Ch. 33 - A compound extracted from the leaves of the shrub...Ch. 33 - Most bats eat insects or fruit. Vampire bats,...Ch. 33 - Prob. 4CT
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- Aside from the lens, damage to the ________ can affect the eye’s ability to focus light. a. iris b. cornea c. pupil d. retinaarrow_forwardMyopia is a condition in which a person has: a. light rays focusing in front of the retina due to a flattened cornea b. light rays focusing in front of the retina due to a short eyeball c. light rays focusing in front of the retina due to a cornea that is too curved d. light rays focusing in front of the retina due to a detached retinaarrow_forward
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