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5 Cards in this Set
- Front
- Back
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Energetics of Contraction
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In Muscles energy is replenished during relaxation must be done as soon as it is used up for fast energy replenishment such as during sports atp is resynthesized using Phosphocreatine PCr
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Phosphocreatine
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Mitochondria produces adp and PCr its anaerobic and rely's on glycolysis as last resort
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Red Muscle fibers
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Slow Twitch
Oxidative – high reliance on oxygen – lot of mitochondria in muscle fibers would be found in high amounts in marathon runners |
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White Muscle Fibers
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Fast Twitch
powerful gycolytic doesn't require as much oxygen less mitochondria Would be found in high amounts in sprinters |
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Red Muscle fibers vs. White Muscle Fibers
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Genetics can determine proportions of red vs. white in person
proportions can't be changed muscles made up of combination of red vs. white depending on function proportions are determined |
