cardiac muscle(n = noun.body) heart muscle - the muscle tissue of the heart; adapted to continued rhythmic contraction;
is a kind of muscle, muscular tissue
is a part of heart, pump, ticker
has particulars: cardiac pacemaker, pacemaker, sa node, sinoatrial node, papillary muscle, atrioventricular bundle, atrioventricular trunk, bundle of his, truncus atrioventricularis, atrioventricular node, myocardium, purkinje fiber, purkinje's system, purkinje's tissue, purkinje network

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