Sliding Filament Theory Flashcards
1
Q
What is happening right before the sliding filament Theory begins?
A
Calcium is low and actin and myosin are not interacting
2
Q
What happens in the first stage of the sliding filament Theory?
A
Calcium is released and the binding sites are unlocked by moving tropomyosin
3
Q
What happens in the second stage of the sliding filament Theory?
A
Myosin heads form cross-bridges and connect to actin
4
Q
What happens in the third stage of the sliding filament Theory?
A
Myosin heads pull the actin filaments inward
5
Q
What happens in the fourth stage of the sliding filament Theory?
A
Myosin heads release the actin. Energy from ATP starts the cycle again.
6
Q
How does the sliding filament Theory end?
A
Calcium is removed and the muscle goes back to its relaxed state
