Lactic acid system Flashcards
What is the chemical formula for Glucose?
C6H12O6
What is produced from Pyruvic Acid in the absence of oxygen?
Lactic Acid
How much ATP is resynthesized for every molecule of glucose in the Glycolytic System (Anaerobic)?
2 ATP
What enzyme converts stored glycogen into glucose?
GPP (Glycogen Phosphorylase)
When does the Glycolytic System (Anaerobic) begin?
After around 10 seconds of intense exercise
What triggers the release of the enzyme PFK?
Increased ADP & P levels
What is the role of LDH in the Lactic Acid System?
Converts Pyruvic Acid into Lactic Acid
What happens to Lactic Acid after it is produced?
It is stored in the blood or converted back to Pyruvic Acid
What are some advantages of the Lactic Acid System?
- Energy produced quickly
- Oxygen not required
- Large amount of stored glycogen available
- Produces 2 ATP per molecule of glucose
What are some disadvantages of the Lactic Acid System?
- Lactic acid inhibits muscular contraction
- OBLA causes fatigue
- Byproduct reduces pH and prevents enzyme function
- Relatively low ATP yield
What does OBLA stand for?
Onset of Blood Lactate Accumulation
What is the significance of OBLA?
It indicates the point at which blood lactate levels significantly increase and fatigue sets in
What type of reaction is the Lactic Acid System?
Anaerobic
What is the fuel used in the Lactic Acid System?
Glycogen
What is the yield of ATP in the Lactic Acid System?
2 molecules
How long does the Lactic Acid System last?
30 seconds - 3 minutes
What type of sports primarily utilize the Lactic Acid System?
- 800m
- 100m swimming
- 400m
Fill in the blank: Lactic Acid is produced during the Glycolytic System when there is _______.
insufficient oxygen
True or False: The Lactic Acid System can produce energy for activities longer than 3 minutes.
False
What does the buildup of lactic acid in the muscles do to the pH?
Lowers the pH
What can anaerobic training increase in relation to lactic acid?
Tolerance to lactic acid & increased glycogen stores
What is the role of the enzyme Phosphofructokinase (PFK) in glycolysis?
Breaks down glucose into Pyruvic Acid
Draw the Glycolytic system diagram
