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==The cardiac conduction system== | ==The cardiac conduction system== | ||
[[Image:Figure 10. | [[Image:Figure 10.svg|thumb|300px|right|'''Figure 10.'''<br> | ||
The cardiac conduction system. Normally, the insulating fibro-fatty tissue plane at the atrioventricular junction prevents atrial myocardium from contacting ventricular myocardium. The penetrating bundle is the only muscular bridge.]] | The cardiac conduction system. Normally, the insulating fibro-fatty tissue plane at the atrioventricular junction prevents atrial myocardium from contacting ventricular myocardium. The penetrating bundle is the only muscular bridge.]] | ||