Laboratory Manual For Human Anatomy & Physiology
4th Edition
ISBN: 9781260159363
Author: Martin, Terry R., Prentice-craver, Cynthia
Publisher: McGraw-Hill Publishing Co.
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Textbook Question
Chapter 35, Problem 2PL
We are able to see color because the eye contains
a. me1anin.
b. an optic disc.
c. rods.
d. cones.
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Chapter 35 Solutions
Laboratory Manual For Human Anatomy & Physiology
Ch. 35 - The cornea and the sclera compose the ______ layer...Ch. 35 - We are able to see color because the eye contains...Ch. 35 - The perception of vision occurs in the a. optic...Ch. 35 - Which of the following is not part of the middle...Ch. 35 - The area of our eye where visual acuity is best is...Ch. 35 - Which of the following extrinsic skeletal muscles...Ch. 35 - The conjunctiva covers the superficial surface of...Ch. 35 - Tears from the lacrimal gland eventually flow...Ch. 35 - Figure 35.12 Label the structures in the sagittal...Ch. 35 - FIGURE 35.13 Sagittal of the eyes (5*). Identify...
Ch. 35 - Match the terms in column A with the descriptions...Ch. 35 - Prob. 2.13ACh. 35 - List three ways in which rods and cones differ in...Ch. 35 - Partial frontal cut of dissected cow eye. Label...Ch. 35 - Prob. 3.1ACh. 35 - What kind of tissue do you think is responsible...Ch. 35 - How do you compare the shape of the pupil in the...Ch. 35 - Where was the aqueous humor in the dissected eye?Ch. 35 - What is the function of the dark pigment in the...Ch. 35 - Prob. 3.6ACh. 35 - Describe the vitreous humor of the dissected eye.Ch. 35 - A song blow to the head might cause the retina to...
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- Which 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_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_forwardThe arrangement of tunics in the eye, from the innermost to outermost aspect of the eye, is a. retina, vascular, fibrous. b. vascular, retina, fibrous. c. vascular, fibrous, retina. d. retina, fibrous, vascular.arrow_forward
- Contraction 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_forwardA bar of light in a specific part of the retina, with a particular length and orientation, is the most effective stimulus for a.retinal ganglion cells. b.lateral geniculate cells. c.simple cortical cells. d.complex cortical cells.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_forward
- If 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_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_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
- _____ 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_forwardHyperopia 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_forwardThe fibrous tunic of the eye includes the a. conjunctiva. c. choroid. e. retina. b. sclera. d. iris.arrow_forward
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