In which condition does relaxation occur in m | vedclass

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(A) Relaxation occurs when $Ca^{++}$ ions are pumped back into the sarcoplasmic reticulum,resulting in the masking of actin filaments. As the $Ca^{++}

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When $Ca^{++}$ ions are pumped back into the sarcoplasmic reticulum.

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(A) Relaxation occurs when $Ca^{++}$ ions are pumped back into the sarcoplasmic reticulum,resulting in the masking of actin filaments. As the $Ca^{++}$ concentration decreases,the troponin-tropomyosin complex returns to its original position,covering the active sites on the actin filament. This prevents the formation of cross-bridges,allowing the muscle fiber to return to its original state (relaxation) and the '$Z$' lines to return to their original position.

In which condition does relaxation occur in muscles?

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