Action potential in the sarcolemma of muscles | vedclass

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Question

(C) The action potential in the sarcolemma travels through the $T$-tubules and triggers the release of $Ca^{2+}$ ions from the sarcoplasmic reticulum

Vedclass · Accepted Answer

$Ca^{2+}$

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(C) The action potential in the sarcolemma travels through the $T$-tubules and triggers the release of $Ca^{2+}$ ions from the sarcoplasmic reticulum into the sarcoplasm.An increase in the $Ca^{2+}$ concentration in the sarcoplasm leads to the binding of $Ca^{2+}$ with a subunit of troponin on the actin filaments.This binding causes a conformational change in the troponin-tropomyosin complex,which removes the masking of the active sites on actin filaments for myosin heads,thereby initiating muscle contraction.

Action potential in the sarcolemma of muscles causes the release of:

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