Physiology: Energy Systems Flashcards
Identify the 6 energy sources
ATP
PC
Carbohydrates/glycogen
Fats
Protein
Lactic acid
Identify the 3 main energy sources used by a 400m runner.
1.ATP
2.PC
3.Lactic acid
Identify the main energy sources used by a marathon runner
1.ATP-PC system
2. Lactate anaerobic system
3. Aerobic respiration
Which enzyme breaks down ATP?
ATPase
What is ATP broken down into?
ADP + P + Energy
When ATP is broken down, what is the energy used for?
Muscular contractions
Which enzyme detects high levels of ADP?
Creatine kinase
How long does the ATP-PC system last for?
8 seconds
What intensity is the ATP-PC system used for?
High intensity
What energy system is used for a 100m sprint?
ATP-PC
What is PC broken down into?
P + C + Energy
When PC is broken down, what is the energy used for?
To resynthesise ATP
Identify 3 advantages of the ATP-PC system
Rapid release of energy
Rapid resynthesis of ATP
No waste product
Identify 3 disadvantages of the ATP-PC system
Limited store of PC
Only lasts for 8 seconds
Full recovery takes 3 minutes
How long does the lactate anaerobic system last for?
3 minutes
What intensity is the lactate anaerobic system used for?
High intensity
What is the energy source for the lactate anaerobic system?
Carbohydrates
What is glycogen broken down to form?
Glucose
What is glucose broken down into?
Pyruvate
In the lactate anaerobic system, what is pyruvate broken down into?
Lactic acid
Why is pyruvate broken down into lactic acid in the lactate anaerobic system?
As there is no oxygen present
How many ATP are resynthesised as a result of the lactate anaerobic system?
2
What is the energy used for in the lactate anaerobic system?
To resynthesise ATP
What is a key disadvantage of the lactate anaerobic system?
Lactic acid is produced
