| Heart Valves Produce |
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| One-way
Blood Flow |
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| Atrioventricular
(AV) valves – prevent backflow of |
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| blood
into the atria when the ventricles contract. |
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| bicuspid valve – between left atrium and |
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| right ventricle |
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| tricuspid valve – between the right
atrium and |
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| right ventricle |
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