fitnfancy8167 fitnfancy8167

18-10-2022
Biology

Answered

- the ventricular muscle cells depolarize at the start of this phase. - during this phase, na entry through the funny channels causes the pacemaker potential of sa nodal cells to gradually become less negative until it reaches threshold. - the ventricular muscle cells repolarize right before this phase. - the cytosolic concentration of calcium in the contractile cells of the ventricle is highest during this phase.

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