LooseLeaf for Human Anatomy
5th Edition
ISBN: 9781259285271
Author: Michael McKinley Dr., Valerie O'Loughlin, Elizabeth Pennefather-O'Brien
Publisher: McGraw-Hill Education
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Question
Chapter 17, Problem 8WYL
Summary Introduction
To determine:
The similarities and differences between the role of cerebral nuclei and the cerebellum on skeletal muscle.
Introduction:
The direct pathway originates in the pyramidal cells of the primary motor cortex. The direct pathway is also called the pyramidal pathway. Their axons project either into the brainstem or into the spinal cord.
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Chapter 17 Solutions
LooseLeaf for Human Anatomy
Ch. 17 - What is meant by somatotopy?Ch. 17 - What information is conducted by sensory pathways?Ch. 17 - Prob. 3WYLCh. 17 - Prob. 4WYLCh. 17 - Prob. 5WYLCh. 17 - Compare and contrast the upper and lower motor...Ch. 17 - What is the primary difference between direct and...Ch. 17 - Prob. 8WYLCh. 17 - Distinguish between the activities controlled by...Ch. 17 - What is the function of the Wernicke area?
Ch. 17 - Prob. 11WYLCh. 17 - Prob. 12WYLCh. 17 - Prob. 13WYLCh. 17 - What are the main differences between non-REM and...Ch. 17 - Match each number item with the most closely...Ch. 17 - Prob. 1MCCh. 17 - Prob. 2MCCh. 17 - Prob. 3MCCh. 17 - Prob. 4MCCh. 17 - Pyramidal cell axons project through corticospinal...Ch. 17 - Prob. 6MCCh. 17 - Prob. 7MCCh. 17 - Prob. 8MCCh. 17 - Prob. 9MCCh. 17 - Where are tertiary neurons located? a. extending...Ch. 17 - Prob. 1CRCh. 17 - Prob. 2CRCh. 17 - What are the main differences between the indirect...Ch. 17 - Prob. 4CRCh. 17 - Prob. 5CRCh. 17 - Prob. 6CRCh. 17 - Explain the process by which something may be...Ch. 17 - Describe the activities of the reticular...Ch. 17 - Compare and contrast the amount of sleep infants,...Ch. 17 - What is the consequence of reduction in the number...Ch. 17 - Prob. 1DCRCh. 17 - Prob. 2DCR
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- Describe the role of the corticospinal tract in controlling voluntary movement.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_forwardExplain the descending pathway from the brain where Mr. D 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
- Explain why muscle tone is first decreased and then increased when descending motor tracts aredamaged. How is muscle tone maintained?arrow_forwardBriefly explain the function of the supraspinal descending inhibitory motor pathways.arrow_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_forward
- Define the term gamma motor neurons?arrow_forwardHow would a lesion in the cerebellum and a lesion in the basal nuclei differ in their effects on skeletal muscle function ?arrow_forwardPlease order the steps of voluntary movement. 1) Primary motor cortex sends information to alpha motor neurons 2) The prefrontal and parietal cortices decide to initiate movement. 3) Alpha motor neurons initiate muscle contractions. 4) The supplementary motor area (SMA) uses input from the thalamus and basal ganglia to plan a movement.arrow_forward
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