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==Key Stage 4==
===Meaning===
The [[Tricuspid Valve]] is a [[Heart Valve|heart valve]] that stops [[blood]] from flowing backwards from the [[Right Ventricle|right ventricle]] into the [[Right Atrium|right atrium]].
===About the Tricuspid Valve===
: The [[Tricuspid Valve]] is made of three flaps of [[tissue]] that are angled to open when [[blood]] flows in one direction and close when [[blood]] flows in the other direction.