Sliding+Filament+Theory

=__Sliding Filament Theory__=

For almost all of the muscles that are within the human body, the sliding filament theory is a process of great significance. In a nutshell the sliding filament theory is the way that all muscles use in order to contract.

__ Movement __
During this process, muscles are able to contract as a result of several different steps. First of all, the calcium from the sarcoplasmic reticulum is released, and as a result the calcium ions then attach onto the troponin, allowing the actin active sites to be exposed, and also remving the blocking action tropomyosin.

Next, the myosin heads are able to bind to actin, because of the exposed active site. The myosin head then grabs onto the actin, tilts and forces the actin to move toward the myosin. An important note also is that for this step to occur, there must be ATP present.

Now, after the ATP has binded with the myosin head, this creates enough energy to help release the myosin head from the actin, and as the myosin head moves away, muscle contraction is created.



[|Sliding Filament Theory] [|Sliding Filament Theory]