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Depolarization of the SA node, Action potentials of the myocardium & ANS effects

By: HWC, Views: 6494

• A typical contractile cell in the myocardium has a resting membrane potential. • The resting membrane potential of cells in the SA node is not fixed, and is known as the pacemaker potential. • The action potential of a healthy SA nodal cell has three parts: • Pacemaker potential: ...