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Difference Between AV Valves and Semilunar Valves l AV Valves vs 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.

The heart is a muscular organ that circulates blood throughout our body via the circulatory system. It provides oxygen and other nutrients to all parts of our body and cleans our body by removing metabolic wastes. The human heart has four chambers; two atria (left atrium and right atrium) and two ventricles (left ventricle and right ventricle). There are four heart valves that allow blood to flow in one direction through the heart. They are two atrioventricular (AV) valves (mitral valve and tricuspid valve) and two semilunars (SL) valves (aortic valve and pulmonary valve). Mitral valve and aortic valve located in the left side of the heart while the tricuspid valve and pulmonary valve located in the right side of the heart.

CONTENTS

1. Overview and Key Difference
2. What are AV Valves
3. What are Semilunar Valves
4. Similarities Between AV Valves and Semilunar Valves
5. Side by Side Comparison – AV Valves vs Semilunar Valves in Tabular Form
6. Summary

What are AV Valves?

AV valves are the two heart valves that lie between atria and ventricles. There are two AV valves namely, the mitral valve and tricuspid valve. Mitral valve is also known as bicuspid valve locates in the left side of the heart between the left atrium and left ventricle. On the other hand, the tricuspid valve locates between the right atrium and right ventricle.