Inhaltsverzeichnis
Was ist Chordae tendineae?
Die Chordae tendineae sind dünne Sehnenfäden, die an den freien Enden der Segelklappen des menschlichen Herzens ansetzen.
Welche Aufgaben haben die Papillarmuskeln?
Die Papillarmuskeln der Mitralklappe Diese Muskeln sind kleine Vorstülpungen des Herzkammermuskels in den Ventrikel. Sie verhindern, dass die frei hängenden Segel der Mitralklappe bei der Kontraktion der Herzkammer (Zusammenziehen des Muskels in der Systole) durch den entstehenden Druck in den Vorhof zurückschlagen.
Was ist eine Mitralklappenrekonstruktion?
Die Mitralklappenrekonstruktion ist ein herzchirurgischer Eingriff um Verengungen oder Insuffizienzen der Mitralklappe zu behandeln. Die Mitralklappe bildet die Grenze zwischen linkem Vorhof und linker Herzkammer.
What is the function of the chordae tendineae?
The chordae tendineae are a group of tough, tendinous strands in the heart. They are commonly referred to as the “heart strings” since they resemble small pieces of string. Functionally, the chordae tendineae play a vital role in holding the atrioventricular valves in place while the heart is pumping blood. Anatomy.
How many cusps does the chordae tendineae connect to?
In the right ventricle, the chordae tendineae connect to the three cusps of the tricuspid valve, while in the left ventricle they connect to the two cusps of the bicuspid (or mitral) valve.
What is the function of intermediate chordae?
Intermediate chordae (secondary chordae) insert on the ventricular surface of the leaflets and relieve valvular tissue of excess tension. They may also be important in preserving ventricular shape and function 1, 2 .
How are chordae classified according to their site of insertion?
Arising from the papillary muscles, they are classified according to their site of insertion between the free margin and the base of leaflets (Figure 1). Marginal chordae (primary chordae) are inserted on the free margin of the leaflets and function to prevent prolapse of the margin of the leaflet.