Aortic opening

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Aortic opening
Latin	ostium aortae
Gray's	subject #138 534
Dorlands/Elsevier	o_09/12601868

The aortic opening (aortic orifice) is a circular aperture, in front and to the right of the atrioventricular, from which it is separated by the anterior cusp of the bicuspid valve.

Its orifice is guarded by the aortic semilunar valves.

The portion of the ventricle immediately below the aortic orifice is termed the aortic vestibule, and possesses fibrous instead of muscular walls.

[edit] External links

• Dictionary at eMedicine aortic+orifice

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 As such, some of the information contained herein may be outdated.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.

Cardiovascular system - Heart - edit

atria (interatrial septum, musculi pectinati) | ventricles (interventricular septum, trabeculae carneae, chordae tendinae, papillary muscle) | valves 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)  → pulmonic 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) pericardium  (sinus) | epicardium | endocardium | myocardium | cardiac skeleton (fibrous trigone, fibrous rings) conduction system: cardiac pacemaker | Purkinje fibers | bundle of His | SA node | AV node