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  2. Heart valve - Wikipedia

    en.wikipedia.org/wiki/Heart_valve

    The closure of the AV valves is heard as lub, the first heart sound (S1). The closure of the SL valves is heard as dub, the second heart sound (S2). The mitral valve is also called the bicuspid valve because it contains two leaflets or cusps. The mitral valve gets its name from the resemblance to a bishop's mitre (a type of hat).

  3. Mitral valve - Wikipedia

    en.wikipedia.org/wiki/Mitral_valve

    The mitral valve and the tricuspid valve are known as the atrioventricular valves because they lie between the atria and the ventricles. [1] In normal conditions, blood flows through an open mitral valve during diastole with contraction of the left atrium, and the mitral valve closes during systole with contraction of the left ventricle. The ...

  4. Tricuspid valve - Wikipedia

    en.wikipedia.org/wiki/Tricuspid_valve

    The tricuspid valve, or right atrioventricular valve, is on the right dorsal side of the mammalian heart, at the superior portion of the right ventricle.The function of the valve is to allow blood to flow from the right atrium to the right ventricle during diastole, and to close to prevent backflow (regurgitation) from the right ventricle into the right atrium during right ventricular ...

  5. Atrioventricular node - Wikipedia

    en.wikipedia.org/wiki/Atrioventricular_node

    The atrioventricular node or AV node ... It is located at the center of Koch's triangle—a triangle enclosed by the septal leaflet of the tricuspid valve, ...

  6. Atrioventricular canal - Wikipedia

    en.wikipedia.org/wiki/Atrioventricular_canal

    The mitral valve and tricuspid valve are formed by the proper division of an early common valve being separated into two. [5] Atrioventricular canal defect may be divided into partial or complete forms. In the partial form, openings between the left and right atria and improper formation of the mitral valve exist.

  7. Atrioventricular - Wikipedia

    en.wikipedia.org/wiki/Atrioventricular

    Atrioventricular (having to do with an atrium and ventricle) can refer to: Left atrioventricular opening; Atrioventricular fistula; Atrioventricular node; Atrioventricular valves, the mitral valve and tricuspid valve