Assertion: pacemaker | /r/Synonym | the sinus node
Facets:
Source sentences:
text: The sinoatrial node (also known as the SA node or the sinus node) is a group of cells located in the wall of the right atrium of the heart.
text: The normal rhythmical heart beat, called sinus rhythm, is established by the heart's own pacemaker, the sinoatrial node (also known as the sinus node or the SA node.