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The right fibrous trigone is an extensive thickening of the most inferior part of the arch of the fibrous skeleton of the heart underlying the right posterior leaflet of the aortic valve. It is the largest thickening of the cardiac skeleton, and for this reason it is termed also the central fibrous body.
It is connected to numerous other components of the fibrous skeleton:
Therefore, the right fibrous trigone forms a link between the aortic, mitral and tricuspid valves.
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