Sinoatrial nodal artery posterior aspect of the interatrial septum. The origin of the sinoatrial node artery is not related to coronary artery dominance, which means the side (right or left) that provides the circulation to the back of the heart. In contrast, the atrioventricular nodal branch, that is the artery that brings blood to the atrioventricular node, depends on coronary artery dominance. The sinoatrial node surrounds the sinoatrial artery, which can run centrally (in 70% of individuals) or off center within the node. A left S-shaped sinoatrial artery, originating from the proximal left circumflex or LCx artery, has been described as a common
Node (physics) eigenstates in the order of increasing energies, formula_1, the eigenfunctions likewise fall in the order of increasing number of nodes; the "n"th eigenfunction has "n−1" nodes, between each of which the following eigenfunctions have at least one node". Node (physics) A node is a point along a standing wave where the wave has minimum amplitude. For instance, in a vibrating guitar string, the ends of the string are nodes. By changing the position of the end node through frets, the guitarist changes the effective length of the vibrating string and thereby the note played. The opposite of a node is