7 - SLIDING FILAMENT THEORY Flashcards

You may prefer our related Brainscape-certified flashcards:
1
Q

1ST STEP

A

Ca2+ released from the sarcoplasmic reticulum of the myofibril

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

2nd STEP

A

Ca2+ binds to troponin on actin, causing the actin-myosin blocking protein tropomyosin to move

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

3rd STEP

A

Myosin heads can now bind to actin, forming a cross bridge

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

4th STEP

A

Myosin heads nod forward, thus pulling the actin over the myosin

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

5th STEP

A

Hydrolysis of ATP by ATPase on the myosin head supplies energy to enable the breaking of the actin myosin cross bridges and formation of new ones further away

How well did you know this?
1
Not at all
2
3
4
5
Perfectly