What are the two entrance valves of the heart where blood goes through after it enters the heart?

The two entrance valves of the heart that allow blood to flow from the atria into the ventricles are the tricuspid valve and the mitral valve. When blood enters the heart, it first flows into the right atrium from the body through the superior and inferior vena cavae. From the right atrium, blood moves through the tricuspid valve into the right ventricle. In a similar manner, blood flows into the left atrium from the lungs through the pulmonary veins, and it then passes through the mitral valve into the left ventricle.

The tricuspid valve is located between the right atrium and right ventricle, while the mitral valve (also known as the bicuspid valve) is situated between the left atrium and left ventricle. This flow of blood through these valves is crucial for maintaining proper circulation as it ensures that blood moves from the atria into the ventricles before being pumped to the lungs and the rest of the body. Understanding the role of these entrance valves is fundamental in the study of cardiac physiology and EKG interpretation.