STRUCTURAL ORGANISTION OF PLANTS AND ANIMALS
STRUCTURAL ORGANISATION IN ANIMALS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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skeletal
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smooth
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cardiac
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None of the above
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Detailed explanation-1: -Skeletal muscle is responsible for overall body mobility. It can contract rapidly, but it tires easily and must rest after short periods of activity.
Detailed explanation-2: -Fast-twitch muscle fibers contain fewer capillaries and mitochondria and less myoglobin. This type of muscle fiber can contract rapidly and powerfully, but it fatigues very quickly.
Detailed explanation-3: -The two types of skeletal muscle fibers are slow-twitch (type I) and fast-twitch (type II). Slow-twitch muscle fibers support long distance endurance activities like marathon running, while fast-twitch muscle fibers support quick, powerful movements such as sprinting or weightlifting.
Detailed explanation-4: -Fast-twitch muscles use up a lot of energy very quickly, then get tired (fatigued) and need a break.
Detailed explanation-5: -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. Note: Type IIb muscle fibers are actually type IIx fibers.