Conduction: Difference between revisions

175 bytes removed ,  30 May 2009
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[[Image:QRSwaves.jpg|thumb|300px|right]]
[[Image:QRSwaves.jpg|thumb|300px|right]]
==The PQ interval==
==The PQ interval==
[[Image:PR_interval_buildup.svg|300px|thumb|right|The PR duration depends on the conduction velocity in the atria, AV node, His bundle, bundle branches and Purkinje fibers.]]
'''The PQ interval starts at the beginning of the atrial contraction and ends at the beginning of the ventricular contraction.'''
'''The PQ interval starts at the beginning of the atrial contraction and ends at the beginning of the ventricular contraction.'''