| 释义 |
atrionector sin·u·a·tri·al node [TA] the mass of specialized cardiac muscle fibers that normally acts as the "pacemaker" of the cardiac conduction system; it lies under the epicardium at the upper end of the sulcus terminalis. Synonym(s): nodus sinuatrialis [TA], atrionector, Flack node, Keith and Flack node, Keith node, Koch node, sinoatrial node, sinus nodeatrionector (ā″trē-ō-nek′tŏr, tor″) [ atrium + nectere, to connect] An obsolete term for sinoatrial node. |