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Sliding-Filament Theory

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Introduction

Sliding-Filament Theory Proposes that a muscle shortens or lengthens because the thick and thin myofilaments sliding past each other without filament lengths being effected. ...read more.

Middle

3. Ca++ binds with Troponin located on Tropomyosin causing active attachment sites to be exposed. 4. Energized Myosin head attaches to exposed site on Actin filaments, attachment causes head deflection resulting in tension production (pulling action). ...read more.

Conclusion

* If impulse is removed Ca++ is actively pumped back into Lateral Sacks allowing Troponin to cover active sites of Actin filament. * CONTRACTION WILL ONLY CONTINUE if there is available Ca++ in the Sarcomere and ATP is available for use. ...read more.

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