Muscle motor unit recruitment follows the pattern of the SO (I) fibers being recruited first followed by the FOG (IIa) and then ultimately by the FG (IIb) if and when workloads require this. Muscle fatigue follows the order that the FG fibers fatigue first, followed by the FOG fibers and finally (maybe never) the SO fibers. Explain how it makes sense physiologically that the last fibers to be recruited to contract are the first to fatigue, while the first fibers to be recruited to contract would be the last to fatigue.
Muscle motor unit recruitment follows the pattern of the SO (I) fibers being recruited first followed by the FOG (IIa) and then ultimately by the FG (IIb) if and when workloads require this. Muscle fatigue follows the order that the FG fibers fatigue first, followed by the FOG fibers and finally (maybe never) the SO fibers. Explain how it makes sense physiologically that the last fibers to be recruited to contract are the first to fatigue, while the first fibers to be recruited to contract would be the last to fatigue.
Human Anatomy & Physiology (11th Edition)
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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Muscle motor unit recruitment follows the pattern of the SO (I) fibers being recruited first followed by the FOG (IIa) and then ultimately by the FG (IIb) if and when workloads require this. Muscle fatigue follows the order that the FG fibers fatigue first, followed by the FOG fibers and finally (maybe never) the SO fibers. Explain how it makes sense physiologically that the last fibers to be recruited to contract are the first to fatigue, while the first fibers to be recruited to contract would be the last to fatigue.
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