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they open to allow the blood through then close again so the blood can't flow back

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Q: What happens to the tricuspid and miltral valves when the heart contracts?
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Related questions

Are the tricuspid valves of the heart also called semilunar valves?

The tricuspid valves are different from the semilunar valves. The tricuspid valve is the right atrioventricular valve.


Where in the heart are the bicuspid and tricuspid valves located?

The bicuspid and tricuspid valves are located between the atria and the ventricles. The bicuspid or mitral valve is on the left, and the tricuspid is on the right.


Why do blood cant flow backward to atrium when ventricles contract?

The tricuspid and bicuspid valves block blood from coming back into the atria.


Why is it important for tricuspid and bicuspid valves to close completely when the ventricle contracts?

These valves keep blood flowing in one direction. If they are 'leaky', less will go to the tissues causing the heart to beat more rapidly.


Can you list all of the valves in the heart?

Aortic, Bicuspid,tricuspid and Pulmonic valves.


What are the names for the two different sets of heart valves?

Atrioventricular valves Bicuspid Valve Tricuspid valve Pulmonary valve Aortic valve these are all the valves which are part of the heart.


What valve of the heart has three valves with chordae tendineae?

No, only the atrio ventricular, or the the tricuspid and bicuspid valves, have heart strings


What is the medical term meaning reverse flow of blood through the mitral or tricuspid valves?

Mitral regurgitation or tricuspid regurgitation is the medical term meaning backflow of blood through the mitral or tricuspid valves, respectively.


Valves separating atria and ventricles are cal led what valves?

for the right atrium and right ventricle, the tricuspid valve separates the two. For the left, the mitral valve separates the two.


What valves open when the atria contract?

tricuspid valve


What are you hearing when your heart beats?

The bicuspid, tricuspid and semilunar valves snapping shut to prevent blood flowing backwards. Bicuspid and tricuspid valves produce the "lub" sound and the semilunar valves produce the "dub" sound.


What is the use of artioventricular valves?

Atrioventricular valves are two in number. Mitral valve is between the left atrium (upper chamber) and left ventricle (lower chamber). Tricuspid valve is between the right atrium (upper chamebr) and right ventricle (lower chamber). Mitral valve closes when the left ventricle contracts, to prevent back flow of blood into the left atrium. Tricuspid valve closes when the right ventricle contracts. Hence the blood from the ventricles are able to go out of the heart into the blood vessels during ventricular contraction. Mitral and tricuspid valves open when the ventricles relax, permitting blood to enter the ventricles from the atria. This blood is pumped out when the ventricles contracts next time.