Right auricular appendix

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Right auricular appendix
Heart seen from above. (Right auricula labeled at upper right.)
Sternocostal surface of heart. (Right auricula visible at upper left.)
Latin auricula dextra
Gray's subject #138 529
Dorlands/Elsevier a_73/12169666

The right auricular appendix (right auricula, right auricle) is a small conical muscular pouch attached to the right atrium of the heart. Its margins present a dentated edge. It projects from the upper and front part of the sinus forward and toward the left side, overlapping the root of the aorta.

The right auricle, along with the right atrial body, is lined with pectinate muscles that form a network of hills and furrows that give it a trabeculated surface.

In older texts, the term "right auricle" was often used to describe the structure now known as the right atrium.

 This cardiovascular system article is a stub. You can help Wikipedia by expanding it.

This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.

v • d • e
Anatomy of torso, cardiovascular system: heart
Structures atria (interatrial septum, musculi pectinati) • ventricles (interventricular septum, trabeculae carneae, chordae tendinae, papillary muscle) • valves • cusps
Regions base • apex • grooves (coronary/atrioventricular, interatrial, anterior interventricula, posterior interventricular) • surfaces (sternocostal, diaphragmatic) • borders (right, left)
Right heart (vena cavae, coronary sinus) → right atrium (auricle, fossa ovalis, limbus of fossa ovalis, crista terminalis, valve of the inferior vena cava, valve of the coronary sinus) → tricuspid valve → right ventricle (conus arteriosus, moderator band/septomarginal trabecula)  → pulmonary valve → (pulmonary artery and pulmonary circulation)
Left heart (pulmonary veins) → left atrium (auricle) → mitral valve → left ventricle → aortic valve (aortic sinus) → (aorta and systemic circulation)
Layers pericardium: fibrous pericardium • serous pericardium (pericardial cavity, epicardium/visceral layer) • pericardial sinus
myocardium • endocardium • cardiac skeleton (fibrous trigone, fibrous rings)
Conduction system Cardiac pacemaker • SA node • AV node• bundle of His • Purkinje fibers

[[pl:Prawe uszko serca]

Retrieved from "http://en.wikipedia.org/wiki/Right_auricular_appendix"
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