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Doctor insights on: Why Do The Semilunar Valves Not Have Chordae Tendinae

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Why do the semilunar valves not have chordae tendinae?

Why do the semilunar valves not have chordae tendinae?

Not a good answer: You aren't going to like this: it's the way god made them. It is the intrinsic nature of the semilunar valves that they don't have chordae. (it's like asking, why do we have only 2 arms and not 3?).

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Dr. Bernard Seif
1 Doctor shared a insight

Valve (Definition)

A valve is a structure that regulates the direction of flow. The heart is a special kind of pump. It moves blood by squeezing and relaxing. There are 4 chambers and each chamber has a valve. This keeps blood from moving backwards when the heart squeezes. When a chamber squeezes it lets the blood move forward but when the chamber is relaxed it prevents the blood from ...Read more


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What could happen if the chordae tendinae ruptured in right valve area?

What could happen if the chordae tendinae ruptured in right valve area?

Leaking valve: A rupture of the chordae tendinae of the mitral valve would result in severe leakage so that blood would flow backwards into the left atrium when the ventricle contracts. This would lead to shortness of breath. Fortunately, that is fairly rare.

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Where is the chordae tendinae located?

Where is the chordae tendinae located?

Inside the ventricle: Chordae attach the valve to its papillary muscles. They are located on the ventricular side of the valve.

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Where are the chordae tendinae located?

Where are the chordae tendinae located?

Below: The chordae tendinae are attached to the underside of the tricuspid (right side of the heart between the right atrium and right ventricle) and the mitral valve (left side of the heart between the left atrium and left ventricle). The attach much the same way that the chords of a parachute attach to the chute. The transmit the forces to pull open the valve and align it to close properly.

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How does a chordae tendinae rupture?

How does a chordae tendinae rupture?

Usually wear & tear: Most cases of chordae tendinae rupture are because of degeneration after years of routine "wear and tear" leads to thickening and retraction. Rarely, it can occur due to infection (endocarditis), either acutely, or later if fibrosis develops and distorts the chorda. If a mitral valve is extremely "floppy", i.e. Mv prolapse, the flopping leaflet may pull the chorda hard enough to tear it.

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Are the chordae tendinae located in both ventricles?

Yes: These serve as the support "strings" for the mitral & tricuspid valves.

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What is the consequences of a ruptured chordae tendinae on the right ventrical?

Rupture chordea: It is like an anchor line to fix a tent onto the ground. Chordae rupture makes the valve lose its functional closing effect disrupting efficient pumping effect of the heart.

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What are the enlarged muscles attached to chordae tendinae?

What are the enlarged muscles attached to chordae tendinae?

Papillary muscles: The papillary muscles are the muscular attachments of the chordae. These along with the valve leaflets and annuli are the mitral and tricuspid apparati.

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What is the function of the chordae tendinae and papillary muscles?

Structure o valve: The valve leaflets are tethered by the chordae tendinae and the papilary muscles. The contraction of the papilary muscles then in turn cause movement of teh valve leaflets allowing opening.

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What is the position of chordae tendinae?

They attach: Wall of right and left ventricles to tricuspid and mitral valves respectively.

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What is the function of the chordae tendinae?

What is the function of the chordae tendinae?

Hold valve: Think of valve as a parachute, chordae tendinae are the "ropes" that anchor the valve leaflets or cusps to the heart muscle. Heart muscle contraction pulls on these cords to close the valve, when when heart relaxes then the valve opens. They are an important part of the heart valve apparatus.

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What is the significance of nonfunctional or defective chordae tendinae?

What is the significance of nonfunctional or defective chordae tendinae?

Heart disease: The chordae are support structures for the mitral and tricuspid valves. When they are damaged, valvar insufficiency results. This can be severe enough to cause congestive heart failure either acute or chronic.

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What would damage to the chordae tendinae in the left ventricle result in?

What would damage to the chordae tendinae in the left ventricle result in?

Mitral regurgitation: Damage to the chordae tendinae would result in problems with the closure and sealing of the mitral valve, and would lead to mitral regurgitation, or leaking, and possibly heart failure.

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What is the result of damage to the chordae tendinae in the left ventricle?

What is the result of damage to the chordae tendinae in the left ventricle?

Heart disease: The chordae are support structures for the mitral and tricuspid valves. When they are damaged, valvar insufficiency results. This can be severe enough to cause congestive heart failure either acute or chronic.

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What are the enlarged muscles in ventricles attached to chordae tendinae known as?

What are the enlarged muscles in ventricles attached to chordae tendinae known as?

Papillary muscle: The papillary muscles attach to the cusps of the atrioventricular valves (a.K.A. The mitral and tricuspid valves) via the chordae tendinae and contract to prevent inversion or prolapse of these valves.

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What would be a long term effects of having a ruptured/redundant chordae tendinae? There is a chance I might have one. Could that have cause my stroke

What would be a long term effects of having a ruptured/redundant chordae tendinae? There is a chance I might have one. Could that have cause my stroke

Mitral valve: Problems are common, -, this could lead to other cardiac problems- dought relation to strokes, see cardiologist- my dad lived 40 years with it! - again, see cardiologist.

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