Synonym for sinoatrial ... <anatomy> Relating to the sinus venosus and the right atrium of the heart. ... Synonym: sinuatrial. ... (20 Jun 2000) ... 
(S-A) Type: Term Definitions: 1. ascending atrial branch, usually (55%) arising from the anterior stem of the right coronary artery (but 35-45% arising from the circumflex branch of the left coronary artery), which runs around the base of the superior vena cava to reach the sinuatrial node. Synonyms: ramus nodi sinuatrialis arter...(S-A, SA) Type: Term Pronunciation: sin′yū-ā′trē-ăl Definitions: 1. Relating to the sinus venosus and the right atrium of the heart. Synonyms: sinoatrial
sinoatrial, sinuatrial A reference to the sinus venosus (sinus of venae cavae) and the atrium of the heart.