A NEW Ballot Drop Box has been installed by the County near the south mid-parking lot entrance to the Convention Center. You may drop your completed ballots inside the sleeve and envelope into the ballot box and the County
Each heart valve has two important functions: To open correctly so that blood can empty from the chamber. To close properly so that blood cannot flow the wrong way. When the valves and chambers fail to move blood properly, symptoms may eventually develop and may require critically important treatment. Learn more about the roles of your heart valves.
Rating Newest Oldest. Best Answer: I hope this helps: Mitral valve allows the blood to flow from the left atrium into the left ventricle. The tricuspid valve is the three flapped valve on the right side of the heart, between the right atrium and the right ventricle which stops the backflow of blood between the two.E: Valves that prevent backflow in the heart? What valve prevents back-flow into the left ventricle? What valve prevents back-flow into the right atrium? What valve prevents back-flow into the left atrium?