A 60-year-old man has had mild weakness of the proximal muscles of the upper and lower extremities for the past several months. He was recently diagnosed with small cell carcinoma of the lung Reflexes are hypoactive. The amplitude of the compound motor action potential elicited in response to a single supramaximal electrical stimulus is small but increases significantly with repetitive stimulation at a frequency of 30 Hz Which of the following is the most likely site of the deficit?Cerebral cortexSpinal cordPeripheral nerveMuscle spindleNeuromuscular junction

The patient's symptoms include mild weakness of the proximal muscles of the upper and lower…

Answered: A 60-year-old man has had mild weakness…

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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A 60-year-old man has had mild weakness of the proximal muscles of the upper and lower extremities for the past several months. He was recently diagnosed with small cell carcinoma of the lung Reflexes are hypoactive. The amplitude of the compound motor action potential elicited in response to a single supramaximal electrical stimulus is small but increases significantly with repetitive stimulation at a frequency of 30 Hz Which of the following is the most likely site of the deficit?
Cerebral cortex
Spinal cord
Peripheral nerve
Muscle spindle
Neuromuscular junction

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