Assertion: cardiac muscle's action potential | /r/HasProperty | initiated by pacemaker cells
Facets:
value: in the sinoatrial node
type: LOCATION
Source sentences:
text: Excitation-contraction coupling in cardiac muscle cells occurs when an action potential is initiated by pacemaker cells in the sinoatrial node or Atrioventricular node and conducted to all cells in the heart via gap junctions.