Human Physiology
15th Edition
ISBN: 9781259864629
Author: Fox, Stuart Ira
Publisher: Mcgraw-hill Education,
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Chapter 8, Problem 18RA
The thalamus has been described as a "switchboard." Explain why, by describing the pathway of somatic sensory information from the receptors to the cerebral cortex.
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The thalamus has been described as a “switchboard.” Explain why, by describing the pathway of somatic sensory information from the receptors to the cerebral cortex.
The thalamus has been described as a “switchboard.” Explain why, by describing the pathway of somatic sensory information from the receptors to the cerebral cortex.
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Princess Leia has asthma, and had to use her inhaler before taking her physiology exam. Later, in the physiology laboratory, she measured her pulse rate and blood pressure and found them to be higher than usual. The following week, after administering some drugs (epinephrine, atropine) she later developed a severe headache and dry mouth. When she looked in the mirror she noticed that her pupils were dilated.
The thalamus acts as a relay point for all but what type of sensory information?
Chapter 8 Solutions
Human Physiology
Ch. 8 - Prob. 1CPCh. 8 - Describe the embryonic origin of the brain...Ch. 8 - Prob. 3aCPCh. 8 - Describe the locations and functions of the basal...Ch. 8 - Prob. 4aCPCh. 8 - Prob. 4bCPCh. 8 - Prob. 5CPCh. 8 - Prob. 6CPCh. 8 - Prob. 7aCPCh. 8 - Prob. 7bCP
Ch. 8 - Prob. 8aCPCh. 8 - Prob. 8bCPCh. 8 - Prob. 9CPCh. 8 - Prob. 10CPCh. 8 - Prob. 11aCPCh. 8 - List the tracts of the extrapyramidal system and...Ch. 8 - Prob. 12aCPCh. 8 - Prob. 12bCPCh. 8 - Prob. 1RACh. 8 - Prob. 2RACh. 8 - Prob. 3RACh. 8 - Prob. 4RACh. 8 - Prob. 5RACh. 8 - Prob. 6RACh. 8 - Prob. 7RACh. 8 - Prob. 8RACh. 8 - Prob. 9RACh. 8 - Prob. 10RACh. 8 - Prob. 11RACh. 8 - Prob. 12RACh. 8 - Prob. 13RACh. 8 - Prob. 14RACh. 8 - Prob. 15RACh. 8 - Prob. 16RACh. 8 - Prob. 17RACh. 8 - The thalamus has been described as a...Ch. 8 - Prob. 19RACh. 8 - Prob. 20RACh. 8 - Prob. 21RACh. 8 - Prob. 22RACh. 8 - Prob. 23RACh. 8 - Prob. 24RACh. 8 - State two reasons why researchers distinguish...Ch. 8 - Describe evidence showing that the hippocampus is...Ch. 8 - Prob. 27RACh. 8 - Prob. 28RACh. 8 - Prob. 29RACh. 8 - Recent studies suggest that medial temporal lobe...Ch. 8 - Much has been made (particularly by left-handers)...Ch. 8 - Prob. 32RACh. 8 - Prob. 33RACh. 8 - Neurologists have noticed that patients with...Ch. 8 - Prob. 35RACh. 8 - Prob. 36RACh. 8 - Table 7.3 (chapter 7) provides the axon diameters...Ch. 8 - Prob. 38RACh. 8 - Prob. 39RACh. 8 - Table 7.3 (chapter 7) provides the axon diameters...
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- A presynaptic neuron in the cerebrum transmits information to hundreds of other neurons. This process is an example of (a) convergence (b) divergence (c) temporal summation (d) spatial summation (e) a graded potentialarrow_forwardVoschin sustained major head trauma in an automobile accident. She is unresponsive to sensory stimuli, and scans of her cerebral cortex demonstrate no cortical activity. During a surgical procedure to relieve pressure on her brain, it is discovered that she has sustained major damage to her thalamus. How does the damage to her thalamus explain her symptoms?arrow_forwardThe thalamus has been described as a “switchboard.” Explain why, by describing the pathway of somatic sensory information from the receptors to the cerebral cortex. Describe the organization of autonomic motor neurons. Describe the structure of the sympathetic and parasympathetic divisions of the autonomic system Distinguish between the different types of adrenergic receptors and state where these receptors are located in the body. Explain what is meant by nicotinic and muscarinic Acetylcholine receptors and describe where these receptors are located in the body. Explain the mechanisms involved when a person blushes. What structures are involved in this response? Analytical Question: Case Study: Princess Leia has asthma, and had to use her inhaler before taking her physiology exam. Later, in the physiology laboratory, she measured her pulse rate and blood pressure and found them to be higher than usual. The following week, after administering some…arrow_forward
- Identify the location of the cell bodies of second order neurons of the Dorsal column medial lemniscus pathway? Ventral horn Dorsal root ganglia Dorsal horn Thalamus Medullaarrow_forwardWhy is the thalamus called the “gateway to the cerebral cortex”?arrow_forwardIdentify the location of the cell bodies of third order neurons of the Doral column medial lemniscus pathway? Ventral horn Dorsal root ganglia Dorsal horn Thalamus Medullaarrow_forward
- Electrical stimulatio of which brain structure would caues pleasurable sensation?arrow_forwardThe posteroventral nucleus of the thalamus projects to all the following centers, except :-a- frontal motor areasb- primary somatic sensory areac- somatic sensory association aread- parieto-occipito-temporal association areaarrow_forwardList two functions of the thalamus?arrow_forward
- What is (are) the most important route(s) for sensory information to reach the amygdala? Through a cortical route from ventral thalamus and a subcortical route from the dorso-medial thalamus Through the pulvinar thalamus to secondary cerebral cortex to association cerebral cortices Through the ventral thalamus to primary and secondary cerebral cortex to pulvinar d. Through primary and secondary cerebral cortices and the brainstem reticular formationarrow_forwardBased on the attached figure (Fig. 18.7B in the textbook), what would an increase in activation of D1 receptor-expressing spiny neurons in the striatum cause in downstream basal ganglia structures? Direct and indirect pathways Substantia D1 nigra pars D2 compacta (transient) Frontal cortex Cerebral cortex (transient) + (transient) + (transient) Caudate/putamen VA/VL complex of thalamus (transient) (transient) Globus pallidus, Globus pallidus, external segment internal segment 0 (tonic) (tonic) + (transient) Subthalamic nucleus OA. decreased activity in the globus pallidus external segment (GPe B. decreased activity in the cortex C. increased activity in the subthalamic nucleus (STN) D. decreased activity in the thalamus E. decreased activity in the globus pallidus internal segment (GPI) Parafascicular nucleusarrow_forwardWhat are characteristic for the ascending sensory pathways: Non-classical pathways use ventral and medial nuclei in the thalamus The thalamus in classical pathways project directly to the lateral nucleus of the amygdala. The thalamus in classical pathways project to primary sensory cortices. Non-classical pathways do not activate the autonomic nervous system.arrow_forward
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