Anaerobic glycolytic system

Question 1

What is the Anaerobic Glycolytic System called?

Answer 1

• Anaerobic Glycolysis.

Question 2

Where does the AGS take place?

Answer 2

• In the sarcoplasm- rapid access.

Question 3

When is the AGS used?

Answer 3

• Used during strenuous exercise that lasts more than 10 seconds.

Question 4

How long does the AGS last?

Answer 4

• Maximal intensity= 60 secs
• Reduced intensity= up to 3 mins

Question 5

What is the main fuel source for the AGS?

Answer 5

• Glycogen/glucose.

Question 6

Process

Answer 6

1. PCr stores run out.
2. Alternate fuel source needed.
3. Glycogen is converted into Glucose-6-phosphate (G-6-P) by the enzyme phosphofructokinase (PFK).
4. Energy is released that creates 2 moles ATP.
5. Pyruvate acid is produced.
6. Process is called glycolysis.
7. In absence of O2, pyruvate is converted into lactate by the enzyme lactate dehydrogenase (LDH).

Question 7

Moles

Answer 7

1 mole PCr= 1 mole ATP
1 mole Glycogen= 2 moles ATP

Question 8

Advantages

Answer 8

1) Few chemical reactions= faster resynthesis of ATP.
2) Anaerobic process= O2 is not needed.
3) Used in sprint finishes/ short bursts of energy during aerobic activities.
4) Cori cycle: pyruvate is converted back into glycogen via the liver.
5) Used in the aerobic system when O2 is available and is converted back into pyruvate acid.

Question 9

Disadvantages

Answer 9

1) Accumulation of Lactic acid denatures enzymes.
2) Accumulation of lactic acid means that intensity has to be reduced or stopped.
3) Only lasts for 60 seconds maximally.