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(CN) Metabolism

What are the three energy systems? ATP-PC (Phosphagen System), Anaerobic Glycolysis (Lactic Acid System), Aerobic (Oxygen System)
What is the ATP-PC system used for? high intensity, short duration exercise, ie: 100m sprint.
How long will the ATP-PC system allow a muscle to sustain a contraction? 15 seconds
Is there more phosphocreatine or ATP in muscle tissue? there's 2 times as much PCr as ATP.
What is the most rapid-release metabolic system? ATP-PC (Phosphagen system)
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.
What metabolic system would likely be used during low intensity, long duration activities (ie: running a marathon)? The aerobic system.
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.
Created by: PT Board Exam
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