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Lactic Acid System. After 10 seconds, the body’s stores of PC are depleted and ATP must be re-synthesized using a different source: The Lactic Acid System.

Published byDiane Richards Modified over 9 years ago

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Presentation on theme: "Lactic Acid System. After 10 seconds, the body’s stores of PC are depleted and ATP must be re-synthesized using a different source: The Lactic Acid System."— Presentation transcript:

1 Lactic Acid System

2 After 10 seconds, the body’s stores of PC are depleted and ATP must be re-synthesized using a different source: The Lactic Acid System Fuel = Carbohydrates (C 6 H 12 O 2 ) i.e. Carbohydrates, Hydrogen and Oxygen

3 Lactic Acid System Carbohydrates are stored in the body as....... This is stored in the body in two places - glycogen muscles and liver

4 Lactic Acid System GlycogenGlucosePyruvic AcidLactic Acid Energy 2 ATP Glycogen phosphorylase Phosphofructokinase (PFK) No O 2 Lactate dehydrogenase (LDH)

5 Summary Takes place in the Sarcoplasm Produces 2 ATP Is Anaerobic Enzymes = glycogen phosphorylase phosphofructokinase (PFK) and lactate dehydrogenase (LDH) Lactic Acid System

6 Advantages -more stores of glycogen than PC so lasts longer -relatively simple process, so quick -no O 2 needed so no delay Disadvantages -lactic acid – reduced pH(increased acidity) = prevents enzymes working = fatigue. Lactic Acid System

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