Blood moves from the atria to the ventricles through which valves?

1- semilunar valves

2- aortic valves

3- atrioventricular valves

4- ventricular valves

The correct answer is: 3- Atrioventricular valves

Heart valves are structures in heart that allow blood flow in only one direction. The valves of heart can be divided in two groups:

1.Atrioventricular valves (AV valves), located between atria and ventricle and they prevent backflow of blood from the ventricles into the atria.

•Mitral valve-between left atrium and left ventricle

•Tricuspid valve-between right atrium and right ventricle

2.Semilunar valves (SL valves) located between ventricles and arteries and they prevent the backflow of blood into the ventricle

•Pulmonary semilunar valve- between the right ventricle and the pulmonary trunk

•Aortic semilunar valve - between the left ventricle and the aorta