Human Physiology
15th Edition
ISBN: 9781259864629
Author: Fox, Stuart Ira
Publisher: Mcgraw-hill Education,
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Chapter 10, Problem 10RA
Summary Introduction
To determine:
The part from where the geniculate receives input.
Introduction:
The lateral geniculate serves as a relay center for the visual pathway that is located in the thalamus. The sensory input arrives from the retina into the lateral geniculate. It is situated on the internal side of an elevation at the caudoventral aspect of the diencephalon.
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Because fibers of the optic nerve that originate in the nasal halves of each retina cross over at the optic chiasma, each lateral geniculate receives input from a.both the right and left sides of the visual field of both eyes. b.the ipsilateral visual field of both eyes. c.the contralateral visual field of both eyes. d.the ipsilateral field of one eye and the contralateral field of the other eye.
Which 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.
Which of the following provides an example of serial (rather than parallel) processing in the visual system?
a.
Visual information is sent from the retina, to the LGN, and then to the visual cortex.
b.
Rods and cones function simultaneously in the retina.
c.
The “what” and “where” streams in the visual association cortex work together.
d.
Processing of motion and shape inform each other.
Chapter 10 Solutions
Human Physiology
Ch. 10 - Prob. 1aCPCh. 10 - Prob. 1bCPCh. 10 - Prob. 1cCPCh. 10 - Prob. 2CPCh. 10 - Prob. 3CPCh. 10 - Define the term sensory acuity and explain how...Ch. 10 - Prob. 4bCPCh. 10 - Prob. 5CPCh. 10 - Prob. 6CPCh. 10 - Prob. 7aCP
Ch. 10 - Describe the structure of the semicircular canals...Ch. 10 - Prob. 8CPCh. 10 - Prob. 9CPCh. 10 - Prob. 10CPCh. 10 - Prob. 11CPCh. 10 - Using a line diagram, show how parallel rays of...Ch. 10 - Prob. 13CPCh. 10 - Describe the layers of the retina and trace the...Ch. 10 - Prob. 14bCPCh. 10 - Describe the electrical state of photoreceptors in...Ch. 10 - Prob. 16aCPCh. 10 - Prob. 16bCPCh. 10 - Prob. 17CPCh. 10 - Describe the way in which ganglion cells typically...Ch. 10 - How can the arrangement of the receptive fields of...Ch. 10 - Describe the stimulus requirements of simple...Ch. 10 - Prob. 1RACh. 10 - Match the vestibular organ on the left with its...Ch. 10 - Prob. 3RACh. 10 - Prob. 4RACh. 10 - Prob. 5RACh. 10 - Cutaneous receptive fields are smallest in a. the...Ch. 10 - Prob. 7RACh. 10 - The receptors for taste are
a. naked sensory...Ch. 10 - Prob. 9RACh. 10 - Prob. 10RACh. 10 - Prob. 11RACh. 10 - Glasses with concave lenses help correct a....Ch. 10 - Prob. 13RACh. 10 - A bar of light in a specific part of the retina,...Ch. 10 - Prob. 15RACh. 10 - Prob. 16RACh. 10 - Prob. 17RACh. 10 - Epithelial cells release transmitter chemicals...Ch. 10 - Explain what is meant by lateral inhibition and...Ch. 10 - Prob. 20RACh. 10 - Prob. 21RACh. 10 - Explain the relationship between smell and taste....Ch. 10 - Prob. 23RACh. 10 - Prob. 24RACh. 10 - Prob. 25RACh. 10 - Describe the sequence of changes that occur during...Ch. 10 - Prob. 27RACh. 10 - Prob. 28RACh. 10 - Prob. 29RACh. 10 - Prob. 30RACh. 10 - Describe the receptive fields of retinal ganglion...Ch. 10 - Prob. 32RACh. 10 - Discuss the different functions of the pigment...Ch. 10 - Prob. 34RACh. 10 - Prob. 35RACh. 10 - People with conduction deafness often speak...Ch. 10 - Prob. 37RACh. 10 - Prob. 38RACh. 10 - Discuss the role that inertia plays in the...Ch. 10 - Prob. 40RACh. 10 - Prob. 41RACh. 10 - Prob. 42RACh. 10 - Prob. 43RACh. 10 - Prob. 44RACh. 10 - Prob. 45RACh. 10 - Prob. 46RA
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- What is meant by the statement Vision happens mainly in the brain?arrow_forwardWhat level do we see retinotopic organization in the visual pathways? a. Retina b. Lateral geniculate nucleus c. Primary visual cortex d. a. and b. e. All of the abovearrow_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
- 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_forwardAt each level of the retina-geniculate-striate system, receptive fields in the foveal area are ___ than those at the periphery Select one: a. both smaller and rounder, for the reasons mentioned in each respective option b. larger, since the fovea mediates low acuity vision c. smaller, since the fovea mediates high acuity vision d. rounder, the receptive fields in the periphery tend to be more square-shapedarrow_forwardWhich of the following is TRUE of the manner in which visual information is transferred from the eyes to the cortex? A. None of the choice options are TRUE B. All information from the retina of the left eye is transmitted to the ipsilateral hemisphere C. All information from the retina of the right eye is transmitted to the contralateral hemisphere D. All information from the left visual field is transmitted to the ipsilateral hemisphere E. All information from the right visual field is transmitted to the contralateral hemispherearrow_forward
- put the following in the correct order of the most directly visual processing pathway from eyes to brain. a. lateral geniculate meuron b. ganglion cell. c. visual cortex neuron d. biploar cell e. optic nerve f. photorecpetorarrow_forwardNear and far vision are accommodated through the muscles of the A. fundus. B. ciliary body. C. iris. D. choroidarrow_forwardWhat are the receptive field characteristics of cortical neurons in layer 3 of the primary visual cortex (V1)? a. Optimally responsive to facial features. b. Optimally responsive to specifically-oriented bars of light. c. Optimally responsive to small spots of light. d. All of the above. e. Optimally responsive to hand features.arrow_forward
- 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 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_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_forward
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