Search Result for "sa_node":
Wordnet 3.0

NOUN (1)

1. a specialized bit of heart tissue that controls the heartbeat;
[syn: pacemaker, cardiac pacemaker, sinoatrial node, SA node]



WordNet (r) 3.0 (2006):

SA node
    n 1: a specialized bit of heart tissue that controls the
         heartbeat [syn: pacemaker, cardiac pacemaker,
         sinoatrial node, SA node]