Calmodulin is found in smooth muscle cells and performs a similar function to troponin in striated muscle fibers.  However, calmodulin not only gets activated by Ca2+ but also slows the release of Ca2+ from the sarcoplasmic reticulum.  How might this difference relate to the different kinds of contractions smooth muscles do in comparison to striated muscles?

Human Physiology: From Cells to Systems (MindTap Course List)
9th Edition
ISBN:9781285866932
Author:Lauralee Sherwood
Publisher:Lauralee Sherwood
Chapter8: Muscle Physiology
Section: Chapter Questions
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Calmodulin is found in smooth muscle cells and performs a similar function to troponin in striated muscle fibers.  However, calmodulin not only gets activated by Ca2+ but also slows the release of Ca2+ from the sarcoplasmic reticulum.  How might this difference relate to the different kinds of contractions smooth muscles do in comparison to striated muscles?

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