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View Full Version : How the heart keep its rhythm

lebtures
Aug 19, 2010, 01:05 PM
What is the factor that causes the heart to keep its rhythm
Devorameira
Aug 22, 2010, 08:59 AM
The heart has its own pacemaker - the SAN (sino-atrial node) which is controlled by nervous impulses from the cardiac centre in the medulla of the brain.