IBBIO
Updated: 5/18/2020
IBBIO
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Storyboard Text

  • And next up, we have our friendly biologist, Mrs. Cool here to explain the Sliding Filament Hypothesis!
  • Well first, we must know that nerve impulses from motor neurons is what controls muscle contractions. Now I can begin. When Acetylcholine, a magic chemical, is released into the synaptic cleft, it binds to receptors to stimulate an action potential.
  • from the beginning, duh!
  • oooomaagoodness! I am just sooo excited to teach alll the children about the Sliding Filament Hypothesis! Where shall I begin?
  • Then the action potential goes from the sarcolemma to all the myofibrils and through the T-Tubules. Calcium ions are released by the sarcoplasmic reticulum and binds to tropomyosin to expose myosin binding sites.
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