Interatrial sulcus (original) (raw)

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Furrow between the upper heart chambers

Interatrial sulcus
Anatomical terminology[edit on Wikidata]

The interatrial sulcus, separating the two atria, is scarcely marked on the posterior surface, while anteriorly it is hidden by the pulmonary artery and aorta.

Public domain This article incorporates text in the public domain from page 527 of the 20th edition of Gray's Anatomy (1918)

vteAnatomy of the heart
General Surface Base Apex Sulci coronary interatrial anterior interventricular posterior interventricular Bordersright left Internal Atria interatrial septum pectinate muscles terminal sulcus Ventricles interventricular septum trabeculae carneae chordae tendineae papillary muscle Valves Cusps Atrioventricular septum Cardiac skeleton Intervenous tubercle
Chambers Right heart (Venae cavae and coronary sinus) → Right atrium (atrial appendage, fossa ovalis, limbus of fossa ovalis, crista terminalis, valve of inferior vena cava, valve of coronary sinus) → Tricuspid valve → Right ventricle (infundibulum, moderator band/septomarginal trabecula, crista supraventricularis) → Pulmonary valve → (Pulmonary artery and pulmonary circulation) Left heart Pulmonary veins → Left atrium (atrial appendage) → Mitral valve → Left ventricle → Aortic valve (aortic sinus) → (Aorta and systemic circulation)
Layers Endocardium Heart valves Myocardium Conduction system cardiac pacemaker SA node Bachmann's bundle AV node bundle of His bundle branches Purkinje fibers Pericardial cavity Pericardial sinus Pericardium Fibrous pericardium sternopericardial ligaments Serous pericardium epicardium Fold of left vena cava
Blood supply Circulatory system Coronary circulation Coronary arteries