Valvularfunktion

Valvularfunktion refers to the normal operation of the heart valves. The heart has four main valves: the mitral valve, aortic valve, tricuspid valve, and pulmonary valve. These valves act as one-way gates, ensuring that blood flows in the correct direction through the heart chambers and into the arteries. During the cardiac cycle, the valves open and close in a precise sequence to facilitate efficient pumping of blood. The mitral and tricuspid valves, known as atrioventricular valves, separate the atria from the ventricles and open to allow blood to flow from the atria into the ventricles. They then close to prevent backflow during ventricular contraction. The aortic and pulmonary valves, known as semilunar valves, are located between the ventricles and the major arteries (aorta and pulmonary artery, respectively). These valves open when the ventricles contract, allowing blood to be ejected into the arteries, and close when the ventricles relax, preventing blood from returning to the ventricles. Proper valvularfunktion is crucial for maintaining adequate blood circulation and oxygen delivery to the body. Dysfunction of these valves, such as stenosis (narrowing) or regurgitation (leakage), can lead to a variety of heart conditions.