Cardiac skeleton

The core skeleton is a layer of connective tissue, often with fat, cartilage or bone deposits that separates the atria and the ventricles of the heart just above the valvular plane. For heart skeleton includes four fiber rings ( Anuli fibrosi ), the two atrioventricular orifices and the two Austreibungsbahnen (aorta, pulmonary trunk ) will be around. The heart valves are connective tissue attached to the fiber rings.

The heart skeleton is used to mechanically stabilize the openings of the chambers of the heart and the origin and insertion of the heart muscle. It separates the heart muscles of the atria from the ventricles and thus enables their temporal separate contraction. In addition, the cardiac skeleton seals off from the conduction from the atria, so is used for electrical insulation. The stimulus resulting from the excitation of the atria can dextrum pierced only by accessing the bundle of His, which fibrous trigone, are passed into the chambers.

The heart skeleton ( valve centrally level ) is crucial for the mechanics at the heart action: Due to the recoil with the Blutaustreibung the apex is relatively fixed locally during the entire cardiac cycle and barely moves. Therefore, consequently, the valve plane is pulled down in the direction of the apex at a contraction of the ventricular muscle. The result is a train on the major heart vessels, which now contract reflexively at relaxation of the ventricular muscle and thus pull the valve level back up. The mechanics of the heart is thus a " raising and lowering of the valve plane ." Ventricular muscle and cardiovascular work while in opposite directions.