Right atrioventricular orifice
Right atrioventricular orifice | |
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![]() Section of the heart showing the ventricular septum. (Right atrioventricular orifice visible at left, but not labeled.) | |
Details | |
Identifiers | |
Latin | ostium atrioventriculare dextrum |
TA | A12.1.02.002 |
FMA | 9274 |
The right atrioventricular orifice (right atrioventricular opening) is the large oval aperture of communication between the right atrium and ventricle.
Situated at the base of the atrium, it measures about 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.
See also
References
This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)
This article is issued from Wikipedia - version of the 6/30/2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.