Storyboard Text
- Myosin head
- I do NOT move.
- Sliding Filament Theory Cartoon
- Calcium Ion I release you!
- Sarcoplasmic reticulum
- Step 4: Skeletal muscle contraction has occurred
- Step 1: Calcium Ions
- Calcium Ion
- Hi Thank you Sarcoplasmic reticulum in the actin filament for releasing me!
- I will now cross bridges (bond) to form between actin filament and myosin head
- Actin Filament
- Calcium Ion
- Step 2: Cross Bridge Forms
- Myosin Head
- Step 6: Troponin
- Actin Filament
- I am sliding in the direction of the Actin filament
- Step 3: Myosin Head slides
- Myosin Head
- I'm produced by the myosin head filament, and I will be producing ATP
- ATPas
- ATP
- I am the newly formed ATP
- My release contracted the actin filament to move and shorten
- ATP
- Myosin Head
- I have shortened!
- Actin Filament
- I have slid past the myosin head, which shortened!
- Step 5: Cross Bridge breaks
- The excess part of me will disconnect Myosin head and Actin filament
- ATP Myosin Head Actin Filament
- ATP will disconnect us right now!
- I will reset the Actin back to its original position.
- Troponin
- I will reset to my original position as well
- Actin
- I will convert back to ADP with ATPase
- ATP
- Myosin Head
- I will revert back to my original position!
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