A 34-year-old member asked:
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what is the differences between sinoatrial and atrioventricular node?

1 doctor answer
Dr. Richard Ohnmacht
34 years experience Pediatrics
Two diffent areas: Eletrical impulses to start the heart beating originate in the sinoatrial node near the top of the heart and travel down fibers to the ac node which is lower in the heart.
Answered on Jun 30, 2013
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SA node: read this: http://en.wikipedia.org/wiki/Sinoatrial_node the impulse is electrochemical
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