What is unique about the structures of the heart valves?

Human heart valves are remarkable structures. These tissue-paper thin membranes attached to the heart wall constantly open and close to regulate blood flow (causing the sound of a heartbeat). The mitral valve and tricuspid valve, which control blood flow from the atria to the ventricles.

What is the difference between the structure of the atrioventricular valves and the Semilunar valves?

The key difference between AV valves and semilunar valves is that the AV valves allow blood to flow from atria to ventricles while the semilunar valves allow blood to flow from ventricles to arteries that emerge from the ventricles.

What is the difference between tricuspid and bicuspid valve?

The tricuspid valve is positioned between the right atrium and right ventricle, whereas the bicuspid valve is located between the left atrium and left ventricle. Furthermore, the tricuspid valve has three cusps, whereas the bicuspid valve has only two.

What is the difference between aortic valve and mitral valve?

The two most commonly discussed heart valves are the mitral valve and the aortic valve. These two valves are located on the left side of the heart. The mitral valve separates the left upper and left lower chambers of the heart. The aortic valve is located at the top of the left lower chamber of the heart.

Where are the four valves of the heart located?

The heart has four valves – one for each chamber of the heart. The valves keep blood moving through the heart in the right direction. The mitral valve and tricuspid valve are located between the between the atria (upper heart chambers) and the ventricles (lower heart chambers).

What is the function of the valves in the heart?

Blood passes through a valve before leaving each chamber of the heart. The valves prevent the backward flow of blood. Valves are actually flaps (leaflets) that act as one-way inlets for blood coming into a ventricle and one-way outlets for blood leaving a ventricle.

Where are the mitral valve and tricuspid valve located?

The mitral valve and tricuspid valve are located between the between the atria (upper heart chambers) and the ventricles (lower heart chambers). The aortic valve and pulmonic valve are located between the ventricles and the major blood vessels leaving the heart.

What are the names of the four chambers of the heart?

In addition to the valves, there are four heart chambers — the upper chambers are called the left and right atrium, the lower chambers are the left and right ventricle.