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-   -   How the heart keep its rhythm (https://www.askmehelpdesk.com/showthread.php?t=499801)

  • Aug 19, 2010, 01:05 PM
    lebtures
    How the heart keep its rhythm
    What is the factor that causes the heart to keep its rhythm
  • Aug 22, 2010, 08:59 AM
    Devorameira

    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.

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