e-tutor.com - Online tutoring, learning, and homeschooling resources      Home    Enroll    Tour    Contact Us    Graphing Calculator         Dictionary Home    Index    About   

Definition of 'sinoatrial node'


  1. a specialized bit of heart tissue that controls the heartbeat
       Synonyms: pacemaker cardiac pacemaker SA node

Get this dictionary without ads as part of the e-Tutor Virtual Learning Program.