(CN) Metabolism
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| What are the three energy systems? | ATP-PC (Phosphagen System), Anaerobic Glycolysis (Lactic Acid System), Aerobic (Oxygen System)
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| What is the ATP-PC system used for? | high intensity, short duration exercise, ie: 100m sprint.
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| How long will the ATP-PC system allow a muscle to sustain a contraction? | 15 seconds
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| Is there more phosphocreatine or ATP in muscle tissue? | there's 2 times as much PCr as ATP.
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| What is the most rapid-release metabolic system? | ATP-PC (Phosphagen system)
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| Why can the phosphagen system provide such rapid-release energy? (3) | 1) It doesn't depend on a long chain of chemical reactions. 2) It doesn't depend on oxygen to working muscles. 3) Both ATP and PC are stored directly in the contractile mechanisms in the muscle.
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| What metabolic system would likely be used during low intensity, long duration activities (ie: running a marathon)? | The aerobic system.
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| What is the trade off of ATP and time for the aerobic metabolic system? | The oxygen system yields the most ATP, but requires several series of complex chemical reactions.
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