PHYSIOLOGY
DIFFERENT TYPE AND STRUCTURE OF MUSCLE FIBERS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Type 1
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Type 2a
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Type 2b
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Type 8
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Detailed explanation-1: -In addition, there is a correlation between the fiber type and the number of adjacent blood vessels: Type IIb fibers generally have fewer adjacent blood capillaries compared to Type I and Type IIa.
Detailed explanation-2: -Type 2B (FG) fibers primarily use anaerobic glycolysis as their ATP source. They have a large diameter and possess high amounts of glycogen, which is used in glycolysis to generate ATP quickly to produce high levels of tension.
Detailed explanation-3: -Estimation of the number of capillaries per individual fiber area in trained muscles demonstrated that type 1 fibers in both leg and arm muscles had, on average, 27% higher capillarization than type 2 fibers (P < 0.05), with no difference between limbs.