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Metabolism
(CN) Metabolism
| Front | Back |
|---|---|
| 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. |
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PT Board Exam
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