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Flashcards in THE LACTIC ACID SYSTEM Deck (11)
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1

How is the lactic acid/glycolytic system powered?

The lactic acid/glycolytic system powered by glucose/glycogen (food).

2

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.

3

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.

4

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.

5

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.

6

What is the ratio in the the lactic acid/glycolytic system?

The ratio in the the lactic acid/glycolytic system in 1:2.

7

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.

8

What is the intensity of the lactic acid/glycolytic system?

The intensity of the lactic acid/glycolytic system is high.

9

What is the duration of the lactic acid/glycolytic system?

The duration of the lactic acid/glycolytic system is 10 secs-2/3 mins.

10

What are the advantages and disadvantages of the lactic acid/glycolytic system?

Advantages of the lactic acid/glycolytic system:
-The combined actions of the ATP/PC system and glycolytic systems allow muscles to re-synthesise ATP even when the supply of oxygen is limited.
-Fast reaction.

Disadvantages of the lactic acid system:
-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.

11

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.