LSC ANATOMY & PHYSIOLOGY CONNECT ACCESS
4th Edition
ISBN: 9781264929290
Author: McKinley
Publisher: MCG CUSTOM
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Question
Chapter 14.3, Problem 7WDYL
Summary Introduction
To analyze:
The following structures for relaying the motor input from the spinal cord to the skeletal muscles: anterior horn, effector (skeletal muscles), spinal nerves, and anterior root.
Introduction:
Motor (or afferent) nerve impulses designate those impulses that are carried by the motor neurons. These neurons constitute the motor cranial (brain) or spinal nerves. Again, certain nerves also act as both sensory and motor nerves.
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Sort 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
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Which of the following would result in no movement (i.e. no activation of the motor
cortex)?
Stimulation of D2 Medium Spiny Neurons
Stimulation of D1 Medium Spiny Neurons
Inhibition of the Globus Pallidus Interna
Inhibition of the Globus Pallidus Externa
Both A & D are correct
Explain 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.
Chapter 14 Solutions
LSC ANATOMY & PHYSIOLOGY CONNECT ACCESS
Ch. 14.1 - Prob. 1WDYLCh. 14.1 - Prob. 2WDYLCh. 14.1 - Prob. 3WDYLCh. 14.1 - Prob. 4WDYLCh. 14.2 - Prob. 5WDYLCh. 14.3 - Prob. 6WDYLCh. 14.3 - Prob. 7WDYLCh. 14.3 - Prob. 8WDYLCh. 14.4 - Prob. 9WDYLCh. 14.4 - Prob. 10WDYL
Ch. 14.4 - Prob. 11WDYLCh. 14.4 - Prob. 12WDYLCh. 14.4 - Prob. 13WDYLCh. 14.5 - Prob. 14WDYLCh. 14.5 - Prob. 15WDYLCh. 14.5 - Prob. 16WDYLCh. 14.5 - Prob. 17WDYLCh. 14.5 - Prob. 18WDYLCh. 14.5 - Prob. 19WDYLCh. 14.5 - Which nerve might you have damaged if you have...Ch. 14.5 - Prob. 21WDYLCh. 14.5 - Prob. 22WDYLCh. 14.5 - Prob. 23WDYLCh. 14.6 - What are the four main properties of a reflex?Ch. 14.6 - Prob. 25WDYLCh. 14.6 - Prob. 26WDYLCh. 14.6 - What is the major difference between monosynaptic...Ch. 14.6 - Prob. 28WDYLCh. 14.6 - Identify the Golgi tendon reflex (which is an...Ch. 14.6 - Prob. 30WDYLCh. 14.7 - Prob. 31WDYLCh. 14 - Prob. 1DYKBCh. 14 - Prob. 2DYKBCh. 14 - Prob. 3DYKBCh. 14 - Prob. 4DYKBCh. 14 - Prob. 5DYKBCh. 14 - Prob. 6DYKBCh. 14 - Prob. 7DYKBCh. 14 - Prob. 8DYKBCh. 14 - Prob. 9DYKBCh. 14 - Prob. 10DYKBCh. 14 - Prob. 11DYKBCh. 14 - List the three gray matter horns on each side of...Ch. 14 - Compare the main differences between the posterior...Ch. 14 - Prob. 14DYKBCh. 14 - Prob. 15DYKBCh. 14 - Prob. 16DYKBCh. 14 - Prob. 17DYKBCh. 14 - Prob. 18DYKBCh. 14 - Prob. 19DYKBCh. 14 - Prob. 20DYKBCh. 14 - Prob. 1CALCh. 14 - Prob. 2CALCh. 14 - Prob. 3CALCh. 14 - Prob. 4CALCh. 14 - Prob. 5CALCh. 14 - Prob. 1CSLCh. 14 - Prob. 2CSLCh. 14 - Prob. 3CSL
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- A friend who works in a research lab is conducting an experiment to study motor movement. First the animal undergoes spinal transection at T5. Then, the animal is trained to walk on a treadmill while supported. Finally, GABA antagonists are injected into the lumbar enlargement of the spinal cord. After treatment of the drug, what motor response would you expect? Question 5 options: A) The animal no longer has proper functioning of back or front legs while on the treadmill B) The animal no longer has coordinated movement of the front legs while on the treadmill C) The animal no longer has coordinated movement of the back legs while on the treadmill D) The animal can walk normally on the treadmill (with support)arrow_forwardMatch functions with parts of the central nervous system (CNS) This structure regulates voluntary movements (checks what the brain has instructed against what is actually happening) The primary motor area is located here This structure is a major sensory relay centre Thirst and satiety centres are located herearrow_forwardDescribe the role of the following in planning and executing movement: spinal cord - brain stem - thalamus - cerebellum - basal ganglia (basal nuclei) - cerebral cortex -arrow_forward
- Explain 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_forwardAn upper motor neuron lesion in the lateral column (lateral corticospinal tract) can result in which of the following problems? Flaccid paralysis, contralateral Flaccid paralysis, ipsilateral Spastic paralysis, contralateral Spastic paralysis, ipsilateral A lower motor neuron lesion in the ventral horn can result in which of the following problems? Flaccid paralysis, contralateral Flaccid paralysis, ipsilateral Spastic paralysis, contralateral Spastic paralysis, ipsilateralarrow_forwardSeveral of the events that occur between the time a physician strikes apatient’s patellar tendon with a rubber hammer and the time the quadriceps femoris contracts (knee-jerk reflex) are listed below:(1) increased frequency of action potentials in sensory neurons(2) stretch of the muscle spindles(3) increased frequency of action potentials in the alpha motor neurons(4) stretch of the quadriceps femoris(5) contraction of the quadriceps femorisWhich of the following most closely describes the sequence ofevents as they normally occur?a. 4,1,2,3,5 c. 1,4,3,2,5 e. 4,2,3,1,5b. 4,1,3,2,5 d. 4,2,1,3,5arrow_forward
- For each of the following body regions, name the peripheral nerve that carries somatic motor fibers to most of the skeletal muscles: flexor surface of the arm flexor surface of the forearm extensor surface of the arm and forearm anterior thigh posterior thigh anterior leg posterior legarrow_forwardDescribe how the loss of motor control differs between flaccid and spastic paralysisarrow_forwardInjury 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_forward
- Electrical stimulation of the basal nuclei and cerebellum can produce skeletal movements. Describe the pathways by which these brain regions control motor activity.arrow_forwardContrast the functions of upper and lower motor neurons.arrow_forwardBriefly explain the function of the supraspinal descending inhibitory motor pathways.arrow_forward
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