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Firstly, the right ventricle is not filled with water. It is filled with blood. The tricuspid valve prevents the leakage of blood back into the right atrium when the ventricle enters systole (contraction).

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Grammatically its not Firstly its First off. You are right the ventricle is not filled with water its mostly RBCs, plasma and WBCs are traveling else where in the body. Also yes "The tricuspid valve prevents the leakage of blood back into the right atrium when the ventricle enters systole (contraction)." is correct. But if you need it to be more detailed this is where it gets complicated: When the action takes place there is 2 sounds that the tricuspid valve can make 1: a "Dupp & Lubb" sound do to a recoil of blood into the next pulmonary artery. If Fluid does back track you get an extra noise. Like "swashing". If this 3rd noise doesnt happen (which is good) this makes it possible for there heart beat noises to take place. Sinoatrial node or known better as SA node generates action potentials on its own (pacemaker's usually come in play if this fails). Impulse passes along fibers to mass of specialized tissue (atrioventricular node). From AV node, the impulses, moves through bundle of His AV Bundle. The impulse divides into L & R branches underneath endocardium, then it gives rise to Purkinje fibers which causes the ventricular walls to contact as said above.

:)))) -Rosie-

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13y ago
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9y ago

When the tricuspid valve closes this is known as tricuspid regurgitation. In this condition, the tricuspid valve doesn't close and blood backs up into the atrium.

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13y ago

Yes it is closed. In systole the ventricles are contracting and if the valve would be open the blood would regurgitate back in the atrium.

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11y ago

They close in order to prevent the backflow of blood. This means that instead of returning to the atria, the blood goes to the correspoding blood vessels.

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Q: What happens when the tricuspid valves close?
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The tricuspid valves are different from the semilunar valves. The tricuspid valve is the right atrioventricular valve.


When do the bicuspid valves open and close?

The bicupid and tricuspid valves close during ventricular contraction. This prevents the backflow of blood from the ventricles to the atria.


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The first sound of a cardiac cycle occurs when?

closure of the mitral and tricuspid valves.


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


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Aortic, Bicuspid,tricuspid and Pulmonic valves.


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