THE LACTIC ACID SYSTEM Flashcards
How is the lactic acid/glycolytic system powered?
The lactic acid/glycolytic system powered by glucose/glycogen (food).
What are the controlling enzymes in the the lactic acid/glycolytic system?
The controlling enzymes in the the lactic acid/glycolytic system are GPP, PFK and LDH.
What type of reactions are involved in the the lactic acid/glycolytic system?
The type of reaction is exothermic, and it is an anaerobic process.
What is the site of reaction in the the lactic acid/glycolytic system?
The site of reaction in the the lactic acid/glycolytic system is the sarcoplasm.
How much ATP is re-synthesised in the the lactic acid/ glycolytic system?
In the the lactic acid/glycolytic system, every 1 molecule of glucose = 2 molecules of ATP.
What is the ratio in the the lactic acid/glycolytic system?
The ratio in the the lactic acid/glycolytic system in 1:2.
Sporting examples of when the lactic acid/glycolytic system is used?
The lactic acid/glycolytic system is used in:
- High intensity activity over 10 seconds.
- Basketball fast break, then back to defend.
What is the intensity of the lactic acid/glycolytic system?
The intensity of the lactic acid/glycolytic system is high.
What is the duration of the lactic acid/glycolytic system?
The duration of the lactic acid/glycolytic system is 10 secs-2/3 mins.
What are the advantages and disadvantages of the lactic acid/glycolytic system?
Advantages
- The combined actions of the ATP/PC system and lactic acid/glycolytic system allows muscles to re-synthesise ATP even when the supply of oxygen is limited.
- Fast reaction.
Disadvantages:
- Accumulation of the by-product LACTIC ACID in the muscles and blood.
- This acidification of muscle fibres inhibits further glycolytic enzyme action (PFK) and impedes muscle contraction.
What happens during the lactic acid/glycolytic process?
- Glycolysis occurs: glycogen, glucose and pyruvic acid are broken down by the controlling enzymes.
- The energy released from this is used to resynthesise ATP.
- Waste product lactic acid is produced during glycolysis.