Describe in detail excitation-contraction coupling in myocardial cells. Be sure to include the main types of membrane...

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Medical Sciences

Describe in detail excitation-contraction coupling inmyocardial cells. Be sure to include the main types of
membrane proteins involved, and the changes in membranepotential, the movements of ions and other
structures involved. Explain how excitation-contractioncoupling in cardiac muscle cells is different from
excitation-contraction coupling in skeletal musclecells. Explain how cardiac muscle cells relax.

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Excitationcontraction coupling in myocardial cells The action potential activates the myocardial cells in order to estabslish the excitationcontraction couplingIt occurs through several steps which is sequentially as follows 1Action potential resides in sarcolemma and down in to transverse tubule system facilitates the cell membrane depolarization 2In phase 2 of action potential Ltype of calcium channel voltage sensitive dihydropyridine DHP receptor allows the entry of calcium See Answer

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