what valve is responsible for preventing the backflow of blood from the right ventricle to the right atrium?
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.