Human Biology: Concepts and Current Issues (8th Edition)
8th Edition
ISBN: 9780134042435
Author: Michael D. Johnson
Publisher: PEARSON
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Chapter 12, Problem 9TY
Summary Introduction
Introduction:
The amount of light entering the eye is strictly regulated in order to ensure that the organism can adapt to the environment in a swift manner, and misinterpretation of the stimuli can be minimized. Therefore, it is important to know which component is responsible for that.
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Myopia is a condition in which a person has:
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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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- 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 nervesarrow_forwardWhen 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.arrow_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_forward
- (iii) Aqueous humour is present between the: A. Lens and Retina B. Iris and Lens C. Cornea and Iris D. Cornea and Lensarrow_forwardThe is the region of the eye that controls the amount of light that enters.a. cornea b. pupil c. lensd. fovea e. retinaarrow_forwardState the part of eye that constricts or dilates based on the amount of light in the environment. A. Cornea B. Iris C. Pupil D. Sclera Choose the correct order for the light transmission inside the eyes. A. Cornea → retina – lens → retina B. Cornea - pupil → lens → retina C. Lens → pupil → cornea → retina D. Pupil → cornea → lens → retinaarrow_forward
- Which of the following will regulate the amount of light entering the eye?a. corneab. lensc. irisd. retinaarrow_forward_____ layer of the retina absorb light and prevent it from scattering in the eye while ______ layer of the retina contains rods and cones for transduction of light energy to create an image. A. neural, choroid B. sclera, vascular C. cornea, ciliary body D. pigmented, neural ________ provides the major internal reinforcement of the posterior part of the eyeball, and helps to keep the retina pressed firmly against wall of eyeball (formed ONLY before brith). A. macula lutea B. vitreous humor C. ciliary zonule D. aqueous humor What type of cells in the eye have axons leaving the retina via the optic nerve for vision? A. bipolar cells B. photoreceptors C. ganglion cells D. rods and conesarrow_forwardMyopia 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_forward
- Vision is a complex process. The human eye has many structures that contribute to vision. Which of the following statements describing the structures involved in the process of vision is NOT correct? a. Ciliary muscles change the shape of the lens to focus both near and distant objects. b. The cornea and lens bend light to focus the image on the retina. c. The iris relaxes and contracts to protect the retina from excess light. d. Lenses move forward or backward to control the amount of light striking the retina.arrow_forwardIf someone is born with dense cataracts on both eyes, and the cataracts are removed years later, what happens?A. The person remains permanently blind.B. The person gradually recovers all aspects of vision.C. The person gains some vision, but remains impaired on object recognition, motion vision, and depth perception.D. The person gains almost all aspects of vision, but remains greatly impaired on color perception.arrow_forwardKnowing what you know about the anatomy of the eyeball, why do you suppose untreated glaucoma (excess aqueous humor production) causes blindness? Group of answer choices a. The excess aqueous humor compresses the optic nerve b. Intraocular pressure increases and the vitreous body presses against the lens c. The fluid accumulation causes the choroid to separate from the sclera d. The buildup of aqueous humor causes the vitreous body to press against the retina and disrupt its blood supply leading to cell death e. Aqueous humor is not reabsorbed as quickly as it is producedarrow_forward
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