Section of the heart showing the ventricular septum. (Right atrioventricular orifice visible at left, but not labeled.)
Details
Identifiers
Latin
ostium atrioventriculare dextrum
TA98
A12.1.02.002
TA2
3983
FMA
9274
Anatomical terminology
[edit on Wikidata]
The right atrioventricular orifice (right atrioventricular opening) is the large oval aperture of communication between the right atrium and ventricle in the heart.
Situated at the base of the atrium, it measures about 3.8 to 4 cm. in diameter and is surrounded by a fibrous ring, covered by the lining membrane of the heart; it is considerably larger than the corresponding aperture on the left side, being sufficient to admit the ends of four fingers.
It is guarded by the tricuspid valve.
and 22 Related for: Right atrioventricular orifice information
and to the left of the orifice of inferior vena cava, and between the inferior vena cava and the rightatrioventricularorifice/tricuspid valve.[citation...
The left atrioventricularorifice (left atrioventricular opening or mitral orifice) is placed below and to the left of the aortic orifice. It is a little...
The aortic orifice (aortic opening) is a circular opening, in front and to the right of the left atrioventricularorifice, from which it is separated by...
right and left atrium. They all end in atrioventricular node. This latter node lies on the floor of atrioventricular septum, just above the orifice of...
of His. The right and left fibrous rings of heart (annuli fibrosi cordis) surround the atrioventricular and arterial orifices. The right fibrous ring...
mitral valve (/ˈmaɪtrəl/), also known as the bicuspid valve or left atrioventricular valve, is one of the four heart valves. It has two cusps or flaps and...
system of the heart, it transmits the electrical impulses from the atrioventricular node (located between the atria and the ventricles) to the point of...
the right primitive ventricle. As the anterior and posterior pads project inwardly, they merge to form a right and left atrioventricularorifice. When...
about 70 beats per minute. Impulses from the sinus node reach the atrioventricular node which acts as the secondary pacemaker. The cells of the AV node...
which divides the canal into two channels, the future right and left atrioventricularorifices. This article incorporates text in the public domain from...
tricuspid valve and the right atrial appendage. The natural history of this defect depends on the size of the communicating orifice between the upper and...
the atrioventricular valves. However, higher insertion of a giant eustachian valve, which mimics the echocardiographic appearance of divided right atrium...
flutter and the technique can also be used in AF, either to block the atrioventricular node after implantation of a pacemaker or to block conduction within...
sound (S2). The pulmonary orifice lies nearly in the horizontal plane, and is situated at a superior level than the aortic orifice. At the apex of the infundibulum...
into a right and left side by the atrioventricular septum, which originates from the union of the dorsal and ventral endocardial cushion. The right side...
Thebesius) is a valve located at the orifice of the coronary sinus where the coronary sinus drains into the right atrium. It prevents blood from flowing...
Atresia is a condition in which an orifice or passage in the body is (usually abnormally) closed or absent. Anotia is characterized by the complete absence...
CSA} C S A = π r 2 {\displaystyle CSA=\pi r^{2}} where: CSA is the valve orifice cross sectional area, r is the valve radius, and, VTI is the velocity time...
contraction. Between the atrium and ventricle is an ostial valve called the atrioventricular valve, and between the bulbus arteriosus and ventricle is an ostial...
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