ATP - PC Flashcards
1
Q
How is energy provided through the ATP-PC system?
A
Phosphocreatine broken down by creatine kinase into phosphate + creatine + energy
phosphate and energy used to resynthesise ATP from ADP
ATPase then breaks phosphate bond to produce energy
2
Q
How much energy is produced?
A
1 ATP
3
Q
Where does it happen?
A
sarcoplasm
4
Q
What are the advantages?
A
high intensity
no harmful byproducts
no delay in O2 delivery
5
Q
What are the disadvantages?
A
8-10s so short duration
inefficient, low energy yield 1:1
6
Q
How much ATP is in a muscle cell to be used immediately?
A
small amount - 3 seconds
7
Q
What happens when immediate ATP levels become low?
A
ATP is resynthesised using phosphocreatine
