Definitions for sa node
ADVERTISEMENT
Princeton's WordNet
pacemaker, cardiac pacemaker, sinoatrial node, SA node(noun)
a specialized bit of heart tissue that controls the heartbeat
Citation
Use the citation below to add this definition to your bibliography:
"sa node." Definitions.net. STANDS4 LLC, 2013. Web. 25 May 2013. <http://www.definitions.net/definition/sa node>.

