Medical Definition of Cardiac skeleton

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 Cardiac Skeleton

cardiac opening
cardiac orifice
cardiac output
cardiac pacemaker
cardiac part of stomach
cardiac plexus
cardiac polyp
cardiac prominence
cardiac reserve
cardiac resuscitation
cardiac rhabdomyoma
cardiac rhythm
cardiac risk
cardiac segment
cardiac shock
cardiac skeleton (current term)
cardiac souffle
cardiac sound
cardiac sphincter
cardiac standstill
cardiac surgical procedures
cardiac symphysis
cardiac syncope
cardiac tamponade
cardiac tamponades
cardiac tube
cardiac valve
cardiac valve prosthesis
cardiac valvular incompetence
cardiac veins

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