ANATOMY & PHYSIOLOGY 4/E PAC 1 SEMESTER
4th Edition
ISBN: 9781265061173
Author: McKinley
Publisher: MCG CUSTOM
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Chapter 16, Problem 6DYKB
Summary Introduction
Introduction:
When an individual sees an object, then the processes are totally dependent on the distance of placing that object. If an object is placed closer than 20 feet, then the light rays will enter into the eyes in diverse form. The eye goes through some changes when an object is closer: Convergence of the eye, Accommodation of the lens, and Constriction of the pupil.
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Students have asked these similar questions
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
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 retina
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
Chapter 16 Solutions
ANATOMY & PHYSIOLOGY 4/E PAC 1 SEMESTER
Ch. 16.1 - How does a sensory receptor function as a...Ch. 16.1 - Prob. 2WDYLCh. 16.1 - Prob. 3WDYLCh. 16.1 - Prob. 4WDYLCh. 16.2 - What are the three types of unencapsulated tactile...Ch. 16.2 - Prob. 6WDYLCh. 16.2 - Prob. 7WDYLCh. 16.3 - What is the role of the mucus in detection of...Ch. 16.3 - Prob. 9WDYLCh. 16.3 - Prob. 10WDYL
Ch. 16.3 - Prob. 11WDYLCh. 16.4 - Prob. 12WDYLCh. 16.4 - Prob. 13WDYLCh. 16.4 - What are the three eye tunics; what is the primary...Ch. 16.4 - Compare the anatomic structure of the cornea and...Ch. 16.4 - Prob. 16WDYLCh. 16.4 - Prob. 17WDYLCh. 16.4 - Prob. 18WDYLCh. 16.4 - What are the differences between rods and cones...Ch. 16.4 - How does dark adaptation differ from light...Ch. 16.4 - What occurs during phototransduction of light?Ch. 16.4 - Prob. 22WDYLCh. 16.4 - Prob. 23WDYLCh. 16.5 - Prob. 24WDYLCh. 16.5 - Prob. 25WDYLCh. 16.5 - Prob. 26WDYLCh. 16.5 - What are the steps for detecting sounds?Ch. 16.5 - Compare the difference in how we perceive pitch...Ch. 16.5 - Prob. 29WDYLCh. 16.5 - Prob. 30WDYLCh. 16.5 - Prob. 31WDYLCh. 16 - _____ 1. Unencapsulated, terminal endings of...Ch. 16 - _____ 2. Each of these sensory receptors is...Ch. 16 - Prob. 3DYKBCh. 16 - Prob. 4DYKBCh. 16 - Prob. 5DYKBCh. 16 - Prob. 6DYKBCh. 16 - _____ 7. Which ear structure is correctly matched...Ch. 16 - Prob. 8DYKBCh. 16 - Prob. 9DYKBCh. 16 - Prob. 10DYKBCh. 16 - Prob. 11DYKBCh. 16 - Prob. 12DYKBCh. 16 - Prob. 13DYKBCh. 16 - Prob. 14DYKBCh. 16 - Prob. 15DYKBCh. 16 - Prob. 16DYKBCh. 16 - Prob. 17DYKBCh. 16 - Prob. 18DYKBCh. 16 - Describe the pathway by which sound waves enter...Ch. 16 - Explain how the vestibule and semicircular canals...Ch. 16 - Prob. 1CALCh. 16 - Prob. 2CALCh. 16 - Prob. 3CALCh. 16 - Prob. 4CALCh. 16 - Prob. 5CALCh. 16 - Prob. 1CSLCh. 16 - Prob. 2CSLCh. 16 - Prob. 3CSL
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- Identify the visual accommodation when focusing on a near object. A. Ciliary muscles contract, suspensory ligaments relax to make lens thick. B. Ciliary muscles relax and pull on the suspensory ligaments to make lens thin. C. Ciliary muscles relax and pull on the suspensory ligaments to make lens thick. D. Ciliary muscles contract, suspensory ligaments relax to make lens thin. . Recognize the sound transmission towards the inner ear. A. Auditory meatus → cochlea → ossicles → oval window → tympanic membrane B. Auditory meatus → tympanic membrane → ossicles → cochlea →oval window C. Auditory meatus → ossicles → tympanic membrane → oval window →cochlea D. Auditory meatus → tympanic membrane → ossicles → oval window →cochleaarrow_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_forwardIdentify the following structures and sketch them in the spaces provided: 1. Cornea 2. Anterior cavity containing aqueous humor 3. Iris 4. Pupil 5. Lens 6. Zonular fibers of the lens 7. Ciliary body a. Ciliary processes b. Ciliary muscle 8. Vitreous chamber containing vitreous body 9. Sclera 10. Choroid 11. Retina a. Macula lutea i. Fovea centralis b. Rods c. Cones 12. Optic disc 13. Optic nerve (cranial nerve II) 14. Primary visual cortex of the brainarrow_forward
- Occlusion is a. the condition in which object properties don’t change when viewed from different angles. b. the idea that numerous physical stimuli can create the same image on the retina. c. when one object partially covers another. d. when the stimulus on the receptors is ambiguous.arrow_forwardWhich of the following statements are true of the physiology of vision? (Read carefully and select all the correct statements.) A. Cones are the receptors for color. B. The lens adjusts for distant vision, and the cornea adjusts for near vision. C. The optic nerve is formed by the ganglion neurons of the choroid layer. D. For near vision, the pupils dilate and the eyes converge. E. The optic chiasma is a crossing of optic nerve fibers that contributes to binocular vision. F. The visual areas are in the occipital lobes of the cerebrum. G. The area of the retina for the best color vision is the optic disc. H. Rods are most numerous at the periphery of the retina.arrow_forwardWhich of the following statements are true of the ear? (Read carefully and select all the correct statements.) A. The cochlea contains the receptors for hearing. B. The auditory bones, in the order they vibrate, are the malleus, incus, and stapes. C. The nerves for hearing and equilibrium are the ninth cranial nerves. D. The eardrum is at the end of the ear canal. E. The receptors that detect movement of the head are hair cells in the organ of Corti. F. The four semicircular canals have hair cells that respond to gravity. G. Air pressure in the middle ear cavity is regulated by the mastoid sinus. H. The auditory areas are in the temporal lobes.arrow_forward
- Which 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_forwardContraction of the smooth muscle in the ciliary body causes thea. lens to flatten. c. lens to become more spherical.b. pupil to constrict. d. pupil to dilate.arrow_forwardGlaucoma primarily causes damage to the: A. Iris B. Lens C. Optic nerve D. Corneaarrow_forward
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