Factors Affecting Conductivity Structural factors Diameter of cardiac cells Gap junctions at Intercalated disk Physiological factors The velocity and amplitude of phase 0 depolarization EXcitability of adjacent regionFactors Affecting Conductivity ➢Structural factors • Diameter of cardiac cells • Gap junctions at Intercalated disk ➢Physiological factors • The velocity and amplitude of phase 0 depolarization • Excitability of adjacent region 45