Any variety
-1998 av JC
Chordae tendineae
www.crutchfield.com shows you how to do any av wiring yourself. Please consult a licensed electrician if you aren't comfortable doing it yourself.
The AV valve is open and the semilunar valve is closed during ventricular diastole.
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The AV valves open when the blood pressure exerted on their atrial side is greater then on the ventricle side. This happens when blood returning to the heart fills the atria and puts pressure against the valve. Note : When heart is completely relaxed, the AV valve flaps hang limply into the ventricle chamber (open) allowing blood from the atria to flow through them directly to the ventricle. Thus, it is the result of ventricle contraction which closes the AV valves and moves them from their resting state (open).
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Semilunar valves are open when the blood is being pumped. The AV valves are closed when the semilunar valves are open.
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Atrioventricular (AV) valves open when the pressure in the atria exceeds the pressure in the ventricles. This pressure difference causes the valves to be pushed open from above, allowing blood to flow from the atria into the ventricles. Therefore, it is the pressure from above the AV valves that causes them to open.
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