PHYSIOLOGY
GENERAL PHYSIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which one of the following is a key characteristic of the largest muscle fibers?
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They are Red in color, meaning they contain a lot of mitochondria
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They contract rapidly with great force but fatigue fast (as they use creatine phosphate pathway)
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They are recruited for long duration activities
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They contain high numbers of Mitochondria
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Explanation:
Detailed explanation-1: -FG fibers are used to produce rapid, forceful contractions to make quick, powerful movements. These fibers fatigue quickly, permitting them to only be used for short periods.
Detailed explanation-2: -Fast-twitch muscle fibers provide bigger and more powerful forces, but for shorter durations and fatigue quickly. They are more anaerobic with less blood supply, hence they are sometimes referred to as white fibers or type II.
There is 1 question to complete.