Image: The cardiac conduction system. The SA node is the natural pacemaker of the heart. You may have heard of permanent pacemakers (PPMs) and temporary pacing wires (TPWs) which are used when the SA node has ceased to function properly.
Grace [grace] as a girls' name is pronounced grayce. It is of Latin origin, and the meaning of Grace is favor, blessing. From grtia. A virtue name introduced by the Puritans, referring to God's grace. It has the same meaning as Anna and Hannah and may be used as a variation of these. In Ireland it is used as an anglicization of Grainne.
Also, as Colleen means girl and Grace means 'of god', my name means girl of god, that's pretty special. I do come from an Irish background but I live in Australia. I have never met another Colleen and for that reason I love my name.I also don't mind the nicknames of Cole or Colly anymore.lso, as Colleen means girl and Grace means 'of god', my name means girl of god, that's pretty special. I do come from an Irish background but I live in Australia. I have never met another Colleen and for that reason I love my name.