Human Physiology
15th Edition
ISBN: 9781259864629
Author: Fox, Stuart Ira
Publisher: Mcgraw-hill Education,
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Question
Chapter 8, Problem 11aCP
Summary Introduction
To review:
Tracts of the pyramidal motor system and their functions.
Introduction:
The information from most of the body parts is sent to the brain via the ascending tract fibers. These tracts are responsible for conduction of impulses in upward direction through the spinal cord. The brain moves the nerve impulses in downward direction through the descending tract of fibers. Pyramidal tracts are a part of descending tract fibers.
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List the tracts of the extrapyramidal system and explain how this system differs from the pyramidal motor system.
Describe the structure and function of the pyramidal and extrapyramidal motor tracts.
Briefly explain the function of the supraspinal descending inhibitory motor pathways.
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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- Injury to the extra pyramidal motor system does not cause paralysis of voluntary movement and general spasticity. Explain why and discuss the major motor symptoms observed in extra pyramidal motor disorders.arrow_forwardContrast the functions of upper and lower motor neurons.arrow_forwardWhy are some areas of the body represented as largerthan other areas on the spatial map of the primary motorcortex?arrow_forward
- Discuss the motor output and reflexes of thebrainstemarrow_forwardSort the structures that the action potential would pass through after being generated by the first order sensory neuron. Drag and drop options into correct order and submit. thalamus anterior ramus of spinal nerve posterior root and rootlets somatosensory cortex of the cerebrum posterior funiculus brainstem brachial plexus posterior grey horn ||| ||| = ||| = ||| = ||| = ||| ||| ||| =arrow_forwardExplain the descending pathway from the brain where Mr. Dexter decides to move his right leg to the actual movement of his quadriceps. (Use complete sentences.) Use key words in this order: primary motor cortex in precentral gyrus, frontal lobe, descending tract, decussate, ventral horn with motor neuron in lumbar spinal cord, ventral root, spinal nerve, sciatic nerve in lumbosacral plexus, muscles to move leg (ie. quadriceps)to take a step.arrow_forward
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