Laboratory Manual For Human Anatomy & Physiology
4th Edition
ISBN: 9781260159080
Author: Martin, Terry R., Prentice-craver, Cynthia
Publisher: Mcgraw-hill Education,
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Textbook Question
Chapter 36, Problem 2PL
Visual acuity is measured using a
a. metric ruler.
b. pen flashlight.
c. Snellen eye chart.
d. astigmatism chart.
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When 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 symmetrical
Binocular disparity is:
Select one:
a. corrected by surgery
b. results from neural convergence
c. is mediated by the lateral geniculate
d. corrected by glasses
e. used for depth perception
Identify 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 brain
Chapter 36 Solutions
Laboratory Manual For Human Anatomy & Physiology
Ch. 36 - As a person ages, the elasticity of the lens a....Ch. 36 - Visual acuity is measured using a a. metric ruler....Ch. 36 - Color blindness is a characteristic in of males a....Ch. 36 - The blind spot is located at the of the eye. a....Ch. 36 - Astigmatism results from a defect in the a....Ch. 36 - Only males can inherit the color blindness...Ch. 36 - Nearsightedness is also called myopia. a. True...Ch. 36 - A convex lens can be used to correct hyperopia. a....Ch. 36 - Explain why small objects e not lost from our...Ch. 36 - Complete the following a. What is meant by 20/70...
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- 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_forwardA 16 year old patient presents with a loss of vision in the left temporal visual field and the right nasal visual field. This patient has a. Left optic tract b. Midline optic chiasm c. Left retina d. Right visual cortexarrow_forwardAn older female patient has a severe visual deficit related toglaucoma. Which nursing action would be appropriate whenproviding care for this patient?a. Assist the patient to ambulate by walking slightly behindthe person and grasping the patient’s arm.b. Concentrate on the sense of sight and limit diversions thatinvolve other senses. c. Stay outside of the patient’s field of vision when perform-ing personal hygiene for the patient. d. Indicate to the patient when the conversation has endedand when the nurse is leaving the room.arrow_forward
- Which of the following parts of the visual system receive(s) input from the left visual hemifield? A. Left V1 B. left LGN C. Left SC D. Two of the above E. None of the abovearrow_forwardIdentify 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_forwardA 56-year-old female had been experiencing some difficulty reading books and newspapers. In order to retain the text in focus while reading, she kept the text at an arm’s length away. The woman is exhibiting: a. delusion b. presbycusis c. presbyopia d. emmetropia e. cataractarrow_forward
- 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 photoreceptorsarrow_forwardWhich of the following is accurate about the maculae of the vestibular apparatus? a. They detect rotational movements of the head. b. They are located in the semicircular canal. c. Nerve signals are generated when the otolithic membrane bends the stereocilia of the hair cells. d. They are the organs of hearing.arrow_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
- Under what condition can a split-brain person describe something he or she sees? A. After seeing it in the right visual field B. After seeing it in the left visual field C. After seeing it with the right eye D. After seeing it with the left eyearrow_forwardChoose the structure that corresponds to each statement. a. bipolar cell layer e. macula lutea b. central fovea f. optic disc c. cones g. photoreceptor layer d. ganglion cell layer h. rods 1. has the highest density of cones in the retina 2. axons form optic nerve 3. does not contain photoreceptors; blind spot 4. photoreceptor that allows us to see color 5. contains rods and cones 6. the center of the neural portion of the retina 7. photoreceptor used in night vision 8. rods and cones synapse on these cellsarrow_forwardWhich of the following statements is/are correct about the visual system? A.Input from the left eye is processed exclusively in the right V1 cortex. B. Each point in the visual field is analyzed by both the right and left V1 cortices. C. The right visual hemifield projects to the right LGN. D. Two of the above statements are correct. E. None of the above statements are correct.arrow_forward
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