Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • adjective Of or relating to the sinoatrial node.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • adjective anatomy Relating to the venous sinus and the right atrium of the heart

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

[sin(us) + atrial.]

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Examples

  • The body's own natural pacemaker, called the sinoatrial (SA) node, is extremely vulnerable to damage during a heart attack, often leaving the patient with a weak, slow or unreliable heartbeat.

    EurekAlert! - Breaking News 2009

  • The body's own natural pacemaker, called the sinoatrial (SA) node, is extremely vulnerable to damage during a heart attack, often leaving the patient with a weak, slow or unreliable heartbeat.

    Science Blog - Science news straight from the source 2009

  • Richard Robinson and his colleagues at Columbia and Stony Brook Universities highlight the fact that the body's own natural pacemaker, called the sinoatrial (SA) node, is extremely vulnerable to damage during a heart attack, often leaving the patient with a weak, slow or unreliable heartbeat.

    Medindia Health News 2009

  • The body's own natural pacemaker, called the sinoatrial (SA) node, is extremely vulnerable to damage during a heart attack, often leaving the patient with a weak, slow or unreliable heartbeat.

    Spero News 2009

  • The body's own natural pacemaker, called the sinoatrial (SA) node, is extremely vulnerable to damage during a heart attack, often leaving the patient with a weak, slow or unreliable heartbeat.

    Health News from Medical News Today 2009

  • The heart's "natural" pacemaker is called the sinoatrial (SA) node or sinus node.

    Find Me A Cure 2008

  • The body’s own natural pacemaker, called the sinoatrial SA node, is extremely vulnerable to damage during a heart attack, often leaving the patient with a weak, slow or unreliable heartbeat.

    Towards A Natural Pacemaker | Impact Lab 2009

  • Contractions of the cardiac muscle are involuntary originating in the sinoatrial node of the heart.

    Muscles Part 3 2008

  • Every beat of your heart depends on this crucial region, the sinoatrial node, which has about 10,000 independent cells that would each beep, have an electrical rhythm -- a voltage up and down -- to send a signal to the ventricles to pump.

    Steven Strogatz on sync 2004

  • Every beat of your heart depends on this crucial region, the sinoatrial node, which has about 10,000 independent cells that would each beep, have an electrical rhythm -- a voltage up and down -- to send a signal to the ventricles to pump.

    Steven Strogatz on sync 2004

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