Human Biology: Concepts and Current Issues (8th Edition)
8th Edition
ISBN: 9780134042435
Author: Michael D. Johnson
Publisher: PEARSON
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Question
Chapter 12, Problem 10TY
Summary Introduction
Introduction:
The focusing of light is an important function of the organ, as it ensures that the visual stimulus being received is interpreted as clearly and correctly as possible. Hence, it is worth taking a closer look at what parts of the eye serve this role.
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a.) Which of the following components of the eye is responsible for two-thirds of the focusing?
a.
The lens
b.
The aqueous humour
c.
The retina
d.
The cornea
e.
The fovea
b.) Which of the following components of the eye allows a person to focus on objects at various distances?
a.
The vitreous humour
b.
The optic nerve
c.
The lens
d.
The photoreceptor cells.
e.
The sclera
c.) Which of the following components of the eye is responsible for image resolution?
a.
The pupil
b.
The retina
c.
The sclera
d.
The lens
e.
The cornea
When an ophthalmologist surgically corrects a patient’s vision through LASIK or PRK, the doctor is making adjustments to the patient’s a. cornea. b. lens. c. retina. d. iris.
Myopia 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 retina
Chapter 12 Solutions
Human Biology: Concepts and Current Issues (8th Edition)
Ch. 12 - Prob. 1QCCh. 12 -
2. Should the use of all hand-held devices,...Ch. 12 - Do you approve of the law in five states that a...Ch. 12 -
1. List the five classifications of receptors in...Ch. 12 - Prob. 2CRCh. 12 -
3. Describe what information the somatic...Ch. 12 - Name the five special senses.Ch. 12 - Compare and contrast fast pain, slow pain, and...Ch. 12 - Prob. 6CRCh. 12 - Prob. 7CR
Ch. 12 - Prob. 8CRCh. 12 - Prob. 9CRCh. 12 - Prob. 10CRCh. 12 - What do the receptors in the skin for light touch...Ch. 12 - Prob. 2TYCh. 12 - Prob. 3TYCh. 12 - Receptor adaptation results when: a. sensory...Ch. 12 - Prob. 5TYCh. 12 - Different pitched sounds will result in...Ch. 12 - Prob. 7TYCh. 12 - Prob. 8TYCh. 12 - Prob. 9TYCh. 12 - Prob. 10TYCh. 12 - Prob. 11TYCh. 12 - Prob. 12TYCh. 12 - Prob. 13TYCh. 12 - Prob. 14TYCh. 12 - Which of the following can be corrected with...Ch. 12 - With the eyes closed, would an astronaut in outer...Ch. 12 - Why do you suppose that you are not normally aware...Ch. 12 - Prob. 3AWKCh. 12 - Prob. 4AWKCh. 12 - Prob. 5AWKCh. 12 - Prob. 6AWKCh. 12 - Prob. 7AWK
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Myopia is a condition in which a person has Select one: 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_forwardWhich of the following components of the eye allows a person to focus on objects at various distances? a. The optic nerve b. The sclera c. The lens d. The photoreceptor cells. e. The vitreous humourarrow_forwardWhen reading, a person with astigmatism sees some lines in sharp focus while others appear blurred. Astigmatism is caused by the a. inability of the iris to contract or dilate b. lens becoming cloudy and rigid c. number of cones on some parts of the retina being deficient d. curvature of the cornea or lens not being symmetricalarrow_forward
- Hyperopia is a condition in which the eye cannot view close objects clearly. Many newborns have hyperopia. Compared to older adults, the lenses of a newborn baby are very light and flexible. Hyperopia in newborn babies is caused by a. the inability of the iris to adjust to changing light conditions b. uneven curvature of the cornea c. loss of lens flexibility d. weak ciliary muscles that do not pull adequately on the lensarrow_forwardWhich of the following statements is correct A. The innermost layer of the retina contains mainly photoreceptors B. The axons that form the optic nerve emerge only from ganglion cells. C. Several types of ganglion cells spike whereas the others do not. D. Two of the statements are correct. E. All three statements are correct.arrow_forwardA clouding of the lens is called a. myopia. b. glaucoma. c. hyperopia. d. cataract.arrow_forward
- When reading, a person with astigmatism sees some lines in sharp focus while others appear blurred. Astigmatism is caused by the Select one: a. inability of the iris to contract or dilate b. lens becoming cloudy and rigid c. number of cones on some parts of the retina being deficient O d. curvature of the cornea or lens not being symmetricalarrow_forward28.) Light enters your eye through a transparent covering called the cornea. a. True b. Falsearrow_forwardwhat will happen if an eyeglasses has: a. two converging lens (explain) b. two diverging lens (explain) c. both converging and diverging lens (explain) P.S. This is not a multiple choice question thank Youarrow_forward
- Which of the following statements are true of the parts of the eye? (Read carefully and select all the correct statements.) A. Vitreous humor is reabsorbed into the canal of Schlemm. B. The radial muscles of the iris constrict the pupil. C. The white of the eye is formed by the sclera. D. The choroid layer absorbs light within the eyeball. E. The conjunctiva is kept moist by tears secreted by the lacrimal glands. F. The retina is the innermost layer of the eyeball. G. The ciliary muscle is a circular smooth muscle that changes the shape of the cornea. H. Aqueous humor is the tissue fluid of the eye; it nourishes the lens and cornea.arrow_forwardGlaucoma primarily causes damage to the: A. Iris B. Lens C. Optic nerve D. Corneaarrow_forwardWhat region of the retina contains a high density of photoreceptor cells and allows for extremely detailed vision? a. fovea centralis b. optic disc c. ora serrata d. ciliary bodyarrow_forward
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