HUMAN ANATOMY
6th Edition
ISBN: 9781260210262
Author: SALADIN
Publisher: RENT MCG
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Chapter 17.1, Problem 1AWYK
Braille uses symbols composed of dots that are raised about 1 mm from the page surface and spaced about 2.5mm apart, which a person scans with the fingertips. When a blind person reads braille, do you think he or she employs neurons with large receptive fields or small ones? Explain
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A scientist has dissected out a small section of the retina and is able to directly record the action potential firing rate in a single ganglion cell.
Assume there is a on-center off-surround bipolar cell connected to an on-center off-surround ganglion cell.
When applying ‘Stimulus 1’ the scientist records a moderate action potential rate. When applying ‘Stimulus 2’ the rate of action potentials increases substantially.
In the context of this experiment no illumination is an option as a 'Stimulus'.
‘Stimulus 2’ would result in what response in the bipolar cell (the one connected to the ganglion cell the scientist is measuring)?
A. A large depolarization of the bipolar cell membrane
B. The bipolar cell membrane would remain at the resting membrane potential
C. A large hyperpolarization of the bipolar cell membrane
D. A small hyperpolarization of the bipolar cell membrane
E. A small depolarization of the bipolar cell membrane
PET (positron emission tomography) scans of the brains of people who have been blind since birth reveal high neural activity in the visual centers of the cerebral cortex when these people read Braille. However, when sighted individuals run their fingers over the raised letters of Braille, the visual centers do not show increased activity. Explain these experimental results.
What are the receptor cells in the eye that are most sensitive to light and that give an image in black / white (grayscale)?
Chapter 17 Solutions
HUMAN ANATOMY
Ch. 17.1 - Braille uses symbols composed of dots that are...Ch. 17.1 - Distinguish between general and special senses.Ch. 17.1 - Three schemes of receptor classification were...Ch. 17.1 - Prob. 3BYGOCh. 17.1 - Prob. 4BYGOCh. 17.1 - Prob. 5BYGOCh. 17.1 - Prob. 6BYGOCh. 17.2 - Prob. 1AWYKCh. 17.2 - What is the difference between a lingual papilla...Ch. 17.2 - Prob. 8BYGO
Ch. 17.2 - What part of an olfactory cell bears the binding...Ch. 17.2 - Prob. 10BYGOCh. 17.3 - Prob. 1AWYKCh. 17.3 - What is the benefit of having three auditory...Ch. 17.3 - Prob. 12BYGOCh. 17.3 - How does the brain recognize the difference...Ch. 17.3 - Prob. 14BYGOCh. 17.3 - Prob. 15BYGOCh. 17.4 - Prob. 1AWYKCh. 17.4 - Prob. 2AWYKCh. 17.4 - Prob. 3AWYKCh. 17.4 - Prob. 16BYGOCh. 17.4 - List as many structural and functional differences...Ch. 17.4 - Prob. 18BYGOCh. 17.4 - Prob. 19BYGOCh. 17.5 - Describe the contributions of the first pharyngeal...Ch. 17.5 - Prob. 21BYGOCh. 17.5 - Prob. 22BYGOCh. 17.5 - Prob. 23BYGOCh. 17 - The meaning of sensory receptor and the range of...Ch. 17 - Prob. 17.1.2AYLOCh. 17 - Prob. 17.1.3AYLOCh. 17 - Prob. 17.1.4AYLOCh. 17 - Prob. 17.1.5AYLOCh. 17 - The types of sensory nerve endings considered to...Ch. 17 - Prob. 17.1.7AYLOCh. 17 - Prob. 17.1.8AYLOCh. 17 - Prob. 17.1.9AYLOCh. 17 - Prob. 17.1.10AYLOCh. 17 - Prob. 17.1.11AYLOCh. 17 - Prob. 17.1.12AYLOCh. 17 - Prob. 17.1.13AYLOCh. 17 - The relationship of taste buds to the lingual...Ch. 17 - Prob. 17.2.2AYLOCh. 17 - Prob. 17.2.3AYLOCh. 17 - Prob. 17.2.4AYLOCh. 17 - Prob. 17.2.5AYLOCh. 17 - Prob. 17.2.6AYLOCh. 17 - Prob. 17.2.7AYLOCh. 17 - Prob. 17.3.1AYLOCh. 17 - Prob. 17.3.2AYLOCh. 17 - The parts of the middle ear, including its three...Ch. 17 - Prob. 17.3.4AYLOCh. 17 - The anatomy of the cochlea and the functional...Ch. 17 - Prob. 17.3.6AYLOCh. 17 - How cochlear function enables the brain to...Ch. 17 - Prob. 17.3.8AYLOCh. 17 - The differences between static and dynamic...Ch. 17 - Prob. 17.3.10AYLOCh. 17 - The action of the otolithic membrane in...Ch. 17 - Prob. 17.3.12AYLOCh. 17 - Prob. 17.3.13AYLOCh. 17 - The projection pathways taken by signals of...Ch. 17 - Prob. 17.4.1AYLOCh. 17 - Prob. 17.4.2AYLOCh. 17 - Prob. 17.4.3AYLOCh. 17 - Prob. 17.4.4AYLOCh. 17 - Prob. 17.4.5AYLOCh. 17 - Prob. 17.4.6AYLOCh. 17 - Prob. 17.4.7AYLOCh. 17 - Prob. 17.4.8AYLOCh. 17 - Prob. 17.4.9AYLOCh. 17 - The projection pathways taken by retinal signals...Ch. 17 - Prob. 17.4.11AYLOCh. 17 - Prob. 17.5.1AYLOCh. 17 - Prob. 17.5.2AYLOCh. 17 - Prob. 17.5.3AYLOCh. 17 - How the lens, vitreous body, anterior chamber,...Ch. 17 - Hot and cold stimuli are detected by free nerve...Ch. 17 - Prob. 2TYRCh. 17 - Prob. 3TYRCh. 17 - Prob. 4TYRCh. 17 - The sensory neurons that begin in the spiral organ...Ch. 17 - The spiral organ rests on the tympanic membrane....Ch. 17 - Prob. 7TYRCh. 17 - Prob. 8TYRCh. 17 - Prob. 9TYRCh. 17 - Prob. 10TYRCh. 17 - The most finely detailed vision occurs when an...Ch. 17 - Fibers of the optic nerve come from the...Ch. 17 - A sensory nerve ending specialized to detect...Ch. 17 - The gelatinous membranes of the macula sacculi and...Ch. 17 - Three rows of ____________ in the cochlea have...Ch. 17 - The __________ is a tiny bone that vibrates in the...Ch. 17 - The ___________ of the midbrain receive auditory...Ch. 17 - The apical microvilli of a gustatory cell are...Ch. 17 - Olfactory neurons synapse with mitral cells and...Ch. 17 - Prob. 20TYRCh. 17 - State a meaning of each word element and give a...Ch. 17 - State a meaning of each word element and give a...Ch. 17 - State a meaning of each word element and give a...Ch. 17 - State a meaning of each word element and give a...Ch. 17 - State a meaning of each word element and give a...Ch. 17 - State a meaning of each word element and give a...Ch. 17 - State a meaning of each word element and give a...Ch. 17 - Prob. 8BYMVCh. 17 - State a meaning of each word element and give a...Ch. 17 - Prob. 10BYMVCh. 17 - Briefly explain why each of the following...Ch. 17 - Briefly explain why each of the following...Ch. 17 - Briefly explain why each of the following...Ch. 17 - Briefly explain why each of the following...Ch. 17 - Briefly explain why each of the following...Ch. 17 - Prob. 6WWWTSCh. 17 - Prob. 7WWWTSCh. 17 - Prob. 8WWWTSCh. 17 - Briefly explain why each of the following...Ch. 17 - Briefly explain why each of the following...Ch. 17 - Prob. 1TYCCh. 17 - What type of cutaneous receptor enables you to...Ch. 17 - Predict the consequences of a hypothetical...Ch. 17 - Prob. 4TYCCh. 17 - Prob. 5TYC
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- The membrane potential of cells within the visual system is recorded in the dark, then following a brief flash of light. During the flash of light you would expect __________ cells to _____________ a rod cell; hyperpolarize b bipolar cell; depolarize c ganglion cell; depolarize d all of the above are correctarrow_forwardOrder the following cells in terms of the size of their receptive field, from smallest to largest: neuron in V4, neuron in V1,neuron in inferotemporal cortex, retinal ganglion cell.arrow_forwardWhen we talk about the receptive field of a receptor cell or of a retinal ganglion cell, what are we are referring to? the area of the lateral geniculate nucleus of the thalamus to which that cell projects its axons the location in the primary visual cortex where we will find neurons that the cell is connected to the part of the retina in which that cell is located the part of the visual field where a stimulus must be in order to make that cell respondarrow_forward
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- labelarrow_forwardReceptor A has a circular receptive field on the skin with a diameter of 2.5 cm. Receptor B has a circular receptive field 7.0 cm in diameter. Which receptor provides more precise sensory information?arrow_forwardWatch this video (http://openstaxcollege.org/l/2point) to see a quick demonstration of two-point discrimination. Touching a specialized caliper to the surface of the skin will measure the distance between two points that are perceived as distinct stimuli versus a single stimulus. The patient keeps their eyes closed while the examiner switches between using both points of the caliper or just one. The patient then must indicate whether one or two stimuli are in contact with the skin. Why is the distance between the caliper points closer on the fingertips as opposed to the palm of the hand? And what do you think the distance would be on the arm, or the shoulder?arrow_forward
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