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