Adjective
sinoatrial (not comparable)
(anatomy, medicine) Relating to the venous sinus and the right atrium of the heart.
sinoatrial block; sinoatrial node
All the ions travel through ion channels in the membrane of the sinoatrial cells. Source: Internet
Being myogenic, the heart's pace is maintained by pacemaker cells found in the sinoatrial node, located on the right atrium. Source: Internet
In general, two types of problems result in bradycardias: disorders of the sinoatrial node (SA node), and disorders of the atrioventricular node (AV node). Source: Internet
Tawara's discovery of the atrioventricular node prompted Arthur Keith and Martin Flack to look for similar structures in the heart, leading to their discovery of the sinoatrial node several months later. Source: Internet
The right coronary artery also supplies blood to the atrioventricular node (in about 90% of people) and the sinoatrial node (in about 60% of people). Source: Internet
The sinoatrial node uses calcium to cause a depolarizing signal transduction pathway from the atrium through right and left atrioventricular bundle which communicates contraction to the ventricles. Source: Internet