heart muscle

1. The muscle tissue of the heart;
   Adapted to continued rhythmic contraction (synset 105397282)
   is a type of: muscle, muscular tissue - animal tissue consisting predominantly of contractile cells
   subtypes:

   • cardiac pacemaker, pacemaker, sa node, sinoatrial node - a specialized bit of heart tissue that controls the heartbeat
   • papillary muscle - any of several muscles associated with the atrioventricular valves
   • atrioventricular bundle, atrioventricular trunk, bundle of his, truncus atrioventricularis - a bundle of modified heart muscle that transmits the cardiac impulse from the atrioventricular node to the ventricles causing them to contract
   • atrioventricular node - a node of specialized heart muscle located in the septal wall of the right atrium; receives impulses from the sinoatrial node and transmits them to atrioventricular bundle
   • myocardium - the middle muscular layer of the heart wall
   • purkinje fiber - a specialized cardiac muscle fiber that is part of the Purkinje network
   • purkinje network, purkinje's system, purkinje's tissue - a network of Purkinje fibers that carry the cardiac impulse from the atrioventricular node to the ventricles of the heart and causes them to contract
   is a part of: heart, pump, ticker - the hollow muscular organ located behind the sternum and between the lungs; its rhythmic contractions move the blood through the body
   same as: cardiac muscle

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