Which ion binds with troponin during muscle c | vedclass

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Question

(B) During muscle contraction,an action potential travels along the sarcolemma and reaches the $T$-tubules,triggering the release of $Ca^{+2}$ ions fr

Vedclass · Accepted Answer

$Ca^{+2}$

Vedclass · Answer

(B) During muscle contraction,an action potential travels along the sarcolemma and reaches the $T$-tubules,triggering the release of $Ca^{+2}$ ions from the sarcoplasmic reticulum into the sarcoplasm.These $Ca^{+2}$ ions bind to the troponin complex on the thin filaments (actin).This binding causes a conformational change in the troponin-tropomyosin complex,which shifts the tropomyosin away from the active sites on the actin filament.This exposure of active sites allows the myosin heads to bind to actin,forming cross-bridges and initiating muscle contraction.

Which ion binds with troponin during muscle contraction?

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