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