Archives : Lexicon

Also sinoatrial node (SA node). A cluster of cells that are situated in the upper part of the wall of the right atrium, where the...

A large vein that receives blood from the head, neck, upper extremities, and thorax and delivers it to the right atrium of the heart....

A typical constellation of physical and laboratory findings that may be seen as part of a primary disease process. A syndrome does not refer to...