During muscle contraction in a skeletal muscl | vedclass

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(B) During muscle contraction,the $Ca^{2+}$ ions released into the sarcoplasm bind to the $TpC$ (Troponin $C$) subunit of the troponin complex.This bi

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$TpC$

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(B) During muscle contraction,the $Ca^{2+}$ ions released into the sarcoplasm bind to the $TpC$ (Troponin $C$) subunit of the troponin complex.This binding induces a conformational change in the troponin complex,which in turn moves the tropomyosin molecule away from the active sites on the actin filament.This exposes the myosin-binding sites on actin,allowing the formation of cross-bridges between actin and myosin,which leads to muscle contraction.

During muscle contraction in a skeletal muscle fibre,$Ca^{2+}$ combines with

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