Question:

If the membranes of the cardiac muscle cells in the SA node

Last updated: 7/26/2022

If the membranes of the cardiac muscle cells in the SA node

If the membranes of the cardiac muscle cells in the SA node become more permeable to potassium ions, the membrane will depolarize. stroke volume will increase. heart rate will decrease. intracellular concentration of calcium ion will increase. heart rate will increase.