Medicine, 18.07.2019 22:20, lillianneal
The characteristic plateau in the action potential developed during cardiac muscle contraction is:
a. caused by the removal of calcium ions from the sarcolplasmic reticulum and their transfer to the interstitial fluid outside of the cell
b. due to the opening of fast sodium channels in the sarcolemma
c. produced by the tendency of cardiac muscle fibers to repolarize very quickly
d. the result of the gradual opening of voltage gated calcium channels and the slow movement of calcium ions to the inside of the cells
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