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Which of the following is an example of lower motor neuron dysfunction?
- a)An individual is told to relax her body. Despite attempts to relax, she experiences repeated, uncontrollable muscle spasticity.
- b)An individual sits in a relaxed position with her knee partially flexed. When her foot is pulled upward, the individual involuntarily and rhythmically moves her foot up and down.
- c)An individual is told to lift her left arm, and she has difficulty doing so. Her left arm appears shriveled and shorter than her right arm.
- d)A metal object is dragged along the bottom of an individual’s foot and her toes go into extension away from the bottom of her foot.
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
Which of the following is an example of lower motor neuron dysfunction...
Lower motor neurons are responsible for transmitting motor signals from the central nervous system (CNS) to the muscles. Dysfunction of the lower motor neurons can result in various motor deficits. In the given example, the difficulty in lifting the left arm and the appearance of the left arm as shriveled and shorter than the right arm suggest muscle weakness and atrophy. This could be indicative of lower motor neuron dysfunction that impairs the proper functioning of the muscles in the left arm.
Option A describes repeated, uncontrollable muscle spasticity, which is more indicative of upper motor neuron dysfunction. Upper motor neurons are responsible for transmitting signals from the CNS to the lower motor neurons.
Option B describes involuntary and rhythmic foot movements when the foot is pulled upward, which is a characteristic of a reflex response and does not specifically indicate lower motor neuron dysfunction.
Option D describes the Babinski reflex, where the toes extend away from the bottom of the foot in response to the stimulation of the foot. This is a normal response in infants but is abnormal in adults. However, it is not a specific indicator of lower motor neuron dysfunction.
Therefore, the correct example of lower motor neuron dysfunction is Option C: An individual is told to lift her left arm, and she has difficulty doing so. Her left arm appears shriveled and shorter than her right arm.
Most Upvoted Answer
Which of the following is an example of lower motor neuron dysfunction...
Lower Motor Neuron Dysfunction Example Explanation
Lower motor neuron dysfunction refers to damage or dysfunction in the nerve cells that extend from the spinal cord to the muscles. This type of dysfunction can result in weakness, muscle atrophy, and decreased muscle tone.
Explanation of Option C:
- In this scenario, the individual has difficulty lifting her left arm and it appears shriveled and shorter than her right arm.
- This presentation is indicative of lower motor neuron dysfunction because the weakness and muscle atrophy suggest a problem with the nerve cells that directly innervate the muscles in the left arm.
- The shriveled appearance and decreased muscle tone further support the presence of lower motor neuron dysfunction, as these are common manifestations of this type of nerve damage.
In summary, option C is an example of lower motor neuron dysfunction because of the weakness, muscle atrophy, and altered muscle tone observed in the affected limb.
Lower motor neuron dysfunction refers to damage or dysfunction in the nerve cells that extend from the spinal cord to the muscles. This type of dysfunction can result in weakness, muscle atrophy, and decreased muscle tone.
Explanation of Option C:
- In this scenario, the individual has difficulty lifting her left arm and it appears shriveled and shorter than her right arm.
- This presentation is indicative of lower motor neuron dysfunction because the weakness and muscle atrophy suggest a problem with the nerve cells that directly innervate the muscles in the left arm.
- The shriveled appearance and decreased muscle tone further support the presence of lower motor neuron dysfunction, as these are common manifestations of this type of nerve damage.
In summary, option C is an example of lower motor neuron dysfunction because of the weakness, muscle atrophy, and altered muscle tone observed in the affected limb.
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Which of the following is an example of lower motor neuron dysfunction?a)An individual is told to relax her body. Despite attempts to relax, she experiences repeated, uncontrollable muscle spasticity.b)An individual sits in a relaxed position with her knee partially flexed. When her foot is pulled upward, the individual involuntarily and rhythmically moves her foot up and down.c)An individual is told to lift her left arm, and she has difficulty doing so. Her left arm appears shriveled and shorter than her right arm.d)A metal object is dragged along the bottom of an individual’s foot and her toes go into extension away from the bottom of her foot.Correct answer is option 'C'. Can you explain this answer? for MCAT 2025 is part of MCAT preparation. The Question and answers have been prepared according to the MCAT exam syllabus. Information about Which of the following is an example of lower motor neuron dysfunction?a)An individual is told to relax her body. Despite attempts to relax, she experiences repeated, uncontrollable muscle spasticity.b)An individual sits in a relaxed position with her knee partially flexed. When her foot is pulled upward, the individual involuntarily and rhythmically moves her foot up and down.c)An individual is told to lift her left arm, and she has difficulty doing so. Her left arm appears shriveled and shorter than her right arm.d)A metal object is dragged along the bottom of an individual’s foot and her toes go into extension away from the bottom of her foot.Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for MCAT 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following is an example of lower motor neuron dysfunction?a)An individual is told to relax her body. Despite attempts to relax, she experiences repeated, uncontrollable muscle spasticity.b)An individual sits in a relaxed position with her knee partially flexed. When her foot is pulled upward, the individual involuntarily and rhythmically moves her foot up and down.c)An individual is told to lift her left arm, and she has difficulty doing so. Her left arm appears shriveled and shorter than her right arm.d)A metal object is dragged along the bottom of an individual’s foot and her toes go into extension away from the bottom of her foot.Correct answer is option 'C'. Can you explain this answer?.
Which of the following is an example of lower motor neuron dysfunction?a)An individual is told to relax her body. Despite attempts to relax, she experiences repeated, uncontrollable muscle spasticity.b)An individual sits in a relaxed position with her knee partially flexed. When her foot is pulled upward, the individual involuntarily and rhythmically moves her foot up and down.c)An individual is told to lift her left arm, and she has difficulty doing so. Her left arm appears shriveled and shorter than her right arm.d)A metal object is dragged along the bottom of an individual’s foot and her toes go into extension away from the bottom of her foot.Correct answer is option 'C'. Can you explain this answer? for MCAT 2025 is part of MCAT preparation. The Question and answers have been prepared according to the MCAT exam syllabus. Information about Which of the following is an example of lower motor neuron dysfunction?a)An individual is told to relax her body. Despite attempts to relax, she experiences repeated, uncontrollable muscle spasticity.b)An individual sits in a relaxed position with her knee partially flexed. When her foot is pulled upward, the individual involuntarily and rhythmically moves her foot up and down.c)An individual is told to lift her left arm, and she has difficulty doing so. Her left arm appears shriveled and shorter than her right arm.d)A metal object is dragged along the bottom of an individual’s foot and her toes go into extension away from the bottom of her foot.Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for MCAT 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following is an example of lower motor neuron dysfunction?a)An individual is told to relax her body. Despite attempts to relax, she experiences repeated, uncontrollable muscle spasticity.b)An individual sits in a relaxed position with her knee partially flexed. When her foot is pulled upward, the individual involuntarily and rhythmically moves her foot up and down.c)An individual is told to lift her left arm, and she has difficulty doing so. Her left arm appears shriveled and shorter than her right arm.d)A metal object is dragged along the bottom of an individual’s foot and her toes go into extension away from the bottom of her foot.Correct answer is option 'C'. Can you explain this answer?.
Solutions for Which of the following is an example of lower motor neuron dysfunction?a)An individual is told to relax her body. Despite attempts to relax, she experiences repeated, uncontrollable muscle spasticity.b)An individual sits in a relaxed position with her knee partially flexed. When her foot is pulled upward, the individual involuntarily and rhythmically moves her foot up and down.c)An individual is told to lift her left arm, and she has difficulty doing so. Her left arm appears shriveled and shorter than her right arm.d)A metal object is dragged along the bottom of an individual’s foot and her toes go into extension away from the bottom of her foot.Correct answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for MCAT.
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Which of the following is an example of lower motor neuron dysfunction?a)An individual is told to relax her body. Despite attempts to relax, she experiences repeated, uncontrollable muscle spasticity.b)An individual sits in a relaxed position with her knee partially flexed. When her foot is pulled upward, the individual involuntarily and rhythmically moves her foot up and down.c)An individual is told to lift her left arm, and she has difficulty doing so. Her left arm appears shriveled and shorter than her right arm.d)A metal object is dragged along the bottom of an individual’s foot and her toes go into extension away from the bottom of her foot.Correct answer is option 'C'. Can you explain this answer?, a detailed solution for Which of the following is an example of lower motor neuron dysfunction?a)An individual is told to relax her body. Despite attempts to relax, she experiences repeated, uncontrollable muscle spasticity.b)An individual sits in a relaxed position with her knee partially flexed. When her foot is pulled upward, the individual involuntarily and rhythmically moves her foot up and down.c)An individual is told to lift her left arm, and she has difficulty doing so. Her left arm appears shriveled and shorter than her right arm.d)A metal object is dragged along the bottom of an individual’s foot and her toes go into extension away from the bottom of her foot.Correct answer is option 'C'. Can you explain this answer? has been provided alongside types of Which of the following is an example of lower motor neuron dysfunction?a)An individual is told to relax her body. Despite attempts to relax, she experiences repeated, uncontrollable muscle spasticity.b)An individual sits in a relaxed position with her knee partially flexed. When her foot is pulled upward, the individual involuntarily and rhythmically moves her foot up and down.c)An individual is told to lift her left arm, and she has difficulty doing so. Her left arm appears shriveled and shorter than her right arm.d)A metal object is dragged along the bottom of an individual’s foot and her toes go into extension away from the bottom of her foot.Correct answer is option 'C'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Which of the following is an example of lower motor neuron dysfunction?a)An individual is told to relax her body. Despite attempts to relax, she experiences repeated, uncontrollable muscle spasticity.b)An individual sits in a relaxed position with her knee partially flexed. When her foot is pulled upward, the individual involuntarily and rhythmically moves her foot up and down.c)An individual is told to lift her left arm, and she has difficulty doing so. Her left arm appears shriveled and shorter than her right arm.d)A metal object is dragged along the bottom of an individual’s foot and her toes go into extension away from the bottom of her foot.Correct answer is option 'C'. Can you explain this answer? tests, examples and also practice MCAT tests.
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