Cross Bridge cycle Flashcards
1
Q
Steps of the cross bridge cycel
A
Attachment, power stroke, detachment, recharge, repeat
2
Q
Attachment
A
myosin heads bind to actin filaments
3
Q
power stroke
A
Phosphate is relaesed causing myosin head to rotate, pulling actin filaments toward the middle of the sarcomere
4
Q
detachment
A
ATP binds to myosin heads and detach from actin filaments
5
Q
recharge
A
myosin heads are recharged with energy from ATP hydrolysis
6
Q
repeat
A
myosin heads reattach to actin filaments and repeat the cycle until stimuli stops
7
Q
ATP hydrolysis
A
process to get ADP and Pi
8
Q
How is Ca2+ important
A
Ca binds to troponin which removes tropomyosin which covers myosin binding sites
