Medical Definition of Fibrous skeleton of heart

1. A complex framework of dense collagen forming four fibrous rings (annuli fibrosi), which surround the ostia of the valves, a right and left fibrous trigone, formed by connecting the rings, and the membranous portions of the interatrial and interventricular septa; it is found in association with the base of the ventricles, i.e., at the level of the coronary sulcus; its functions include: 1) contributing reinforcement of the valvular ostia while providing attachment for the leaflets and cusps of the valves; 2) providing origin and insertion for the myocardium; and 3) serving as a sort of electrical "insulator," separating the electrically conducted impulses of the atria and ventricles and providing passage for the common atrioventricular bundle of conductive tissue through the right fibrous trigone and membranous interventricular septum. Synonym: cardiac fibrous skeleton, cardiac skeleton, skeleton of heart. (05 Mar 2000)

Lexicographical Neighbors of Fibrous Skeleton Of Heart

fibrous joint
fibrous lamina
fibrous layer
fibrous mediastinitis
fibrous membrane
fibrous pericarditis
fibrous pericardium
fibrous plaque
fibrous pneumonia
fibrous polyp
fibrous protein
fibrous ring
fibrous ring of heart
fibrous ring of intervertebral disc
fibrous sheaths
fibrous skeleton of heart (current term)
fibrous tissue
fibrous trigones of heart
fibrous tubercle
fibrous tunic of eye
fibrous union
fibrous xanthoma
fibrovascular bundle

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