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.
The name Olivia is Latin and means olive tree. A feminine name that is highly popular. Also the name of a character in Shakespeare's Twelfth Night The â¦ name Grace is English.Initially the name had nothing to do with the physical grace, but was more to do with divine favour.hile the name Olivia is not directly in the Bible, the name is derived from the latin for olive. There are many references to olives in the bible, the most notable being Jesu â¦ s praying on the Mount of Olives.