Question: Which of the following statements about the action potential
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Which of the following statements about the action potentials in contractile myocardial cells (cardiac muscle) is INCORRECT? O Compared to skeletal muscle cells, contractile myocardial cells have a lower (more negative) resting membrane potential While cells in the SA node are autorythmic and are able to generate action potentials without any outside stimuli, contractile myocardial cells require an outside stimulus to generate an action potential The duration of an action potential in a contractile myocardial cell is greater than the duration of an action potential in a typical neuron. During the repolarization phase of a contractile myocardial action potential, the cell is highly permeable to sodium, potassium and calcium.