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.
Submit. Â· just now. Report Abuse. To prevent backflow of blood. Arteries don't need them because the pressure from the heart is enough to keep the blood moving forward. But veins carry blood from the rest of the body to the heart and so need valves to keep the blood moving in one direction only.abcd Â· 8 years ago.Thumbs up. 0. Thumbs down.0. Comment.ubmit. Â· just now. Report Abuse. To prevent backflow of blood. Arteries don't need them because the pressure from the heart is enough to keep the blood moving forward. But veins carry blood from the rest of the body to the heart and so need valves to keep the blood moving in one direction only.