The chordae tendineae are a group of challenging, tendinous strands in the heart. They are typically described as the “heart strings” since they resemble little pieces of string. Functionally, the chordae tendineae play a crucial role in holding the atrioventricular valves in place while the heart is pumping blood.

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Anatomy

The chordae tendineae are a team of string-like tendinous bands discovered within both ventricles of the heart. They arise from the tips of the papillary muscles on the inside of the wall of the ventricles and also extfinish into the hollow luguys. Continue Scrolling To Read More Below...

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Continued From Above... Most sepaprice right into two or even more branches, yet some resemble basic, unbranched strings. On their much finish, the chordae tendineae merge with and insert on the cusps of the atrioventricular (AV) valves. In the ideal ventricle, the chordae tendineae connect to the 3 cusps of the tricuspid valve, while in the left ventricle they affix to the two cusps of the bicuspid (or mitral) valve.

Histologically, the chordae tendineae resemble thin tendons made of thick continuous connective tissue. Many of their mass is made of solid collagen protein fibers, but they likewise contain elastin protein fibers to provide elasticity and fibroblast cells to repair the protein fibers.

Physiology

The objective of ventricular systole, or contractivity of the ventricles, is to pump blood out of the heart and also into the aorta and pulmonary trunk. However, blood will certainly leave the ventricles through any opening, and also some blood attempts to regurgitate, or circulation backwards, into the atria. The AV valves proccasion regurgitation by extending the openings to the atria and also forcing blood to leave the heart. To prevent the valves from blowing out under the extremely high blood pressure within the ventricles, the chordae tendineae host the cusps of each AV valve on the ventricular side. Once filled with blood, the AV valves create a dome form and also resemble tiny parachutes through the chordae tendineae acting as the strings.

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