THE LACTIC ACID SYSTEM Flashcards

1
Q

How is the lactic acid/glycolytic system powered?

A

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

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2
Q

What are the controlling enzymes in the the lactic acid/glycolytic system?

A

The controlling enzymes in the the lactic acid/glycolytic system are GPP, PFK and LDH.

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3
Q

What type of reactions are involved in the the lactic acid/glycolytic system?

A

The type of reaction is exothermic, and it is an anaerobic process.

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4
Q

What is the site of reaction in the the lactic acid/glycolytic system?

A

The site of reaction in the the lactic acid/glycolytic system is the sarcoplasm.

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5
Q

How much ATP is re-synthesised in the the lactic acid/ glycolytic system?

A

In the the lactic acid/glycolytic system, every 1 molecule of glucose = 2 molecules of ATP.

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6
Q

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

A

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

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7
Q

Sporting examples of when the lactic acid/glycolytic system is used?

A

The lactic acid/glycolytic system is used in:

  • High intensity activity over 10 seconds.
  • Basketball fast break, then back to defend.
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8
Q

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

A

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

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9
Q

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

A

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

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10
Q

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

A

Advantages

  1. 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.
  2. Fast reaction.

Disadvantages:

  1. Accumulation of the by-product LACTIC ACID in the muscles and blood.
  2. This acidification of muscle fibres inhibits further glycolytic enzyme action (PFK) and impedes muscle contraction.
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11
Q

What happens during the lactic acid/glycolytic process?

A
  1. Glycolysis occurs: glycogen, glucose and pyruvic acid are broken down by the controlling enzymes.
  2. The energy released from this is used to resynthesise ATP.
  3. Waste product lactic acid is produced during glycolysis.
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