Tricuspid valve -
| The cardiac valves keep the
blood moving in the right direction through the heart. The tricuspid valve
regulates the opening between the right atrium and the right ventricle. As
the right atrium contracts, the tricuspid valve opens, allowing blood to
eject into the right ventricle. When the atrium is finished
contracting, the tricuspid valve closes, thereby preventing a backwash of
blood ("regurgitation") into the right atrium.
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