Atrial appendage

The atrial appendage (auricula atrii) is one of the components of the heart. It is a small hole in the septum between the left and right atria. The atrial appendage is oval in shape and located in the upper part of the left atrium, near its base.

The atrial appendage plays an important role in the functioning of the heart. Through it, blood is exchanged between the left atrium and the right ventricle. This ensures a continuous flow of blood from the lungs into the systemic circulation.

Additionally, the atrial appendage is where the connection between the two atria of the heart occurs. Here, impulses are transmitted from the left atrium to the right, which allows the heart to work as a single unit.

However, the atrial appendage can be susceptible to various diseases such as infections, inflammation and damage. In such cases, surgery may be required to restore normal heart function.

Overall, the atrial appendage is an important component of the heart that plays an important role in its functioning. However, his health may be at risk and treatment may be required if necessary.



The atrial appendage is a small fold of the wall of the atrium (left or right) that is located near the junction of the atria with the pulmonary artery (left) and the opening of the superior vena cava (right). It is formed as a result of the fusion of the epicardium and the visceral layer of the pericardium. The ear is an important anatomical element, as it can serve as a place for attachment of ligaments and tendons, which are necessary to support the myocardium and the normal functioning of the heart. In addition, the eyelet helps prevent possible heart injury during movement and physical activity, which may reduce the risk of developing heart failure. The anatomy of the heart is very complex and has a large number of details, and even some small details of the anatomy are not clinically significant. Such details include the appendage of the right atrium. However, if you look at the structural organization of the heart from the perspective of physiology and innervation, then the left atrial appendage really represents functional significance and is one of the main elements in the work of the entire heart.

The left appendage makes up about 4-5% of the total area of ​​the heart and is located on the inner surface of the septum closer to the base, slightly to the right of the appendage of the left atrioventricular valve. This phenomenon is explained by the fact that the valve leaf prevents the growth of connective tissue towards the heart, so the right ear is closer to the wall. Although the left ear forms only a small depression, its properties are a weak organ, which leads to a slow heart rate and arrhythmias. The structure of the ear consists of connective tissue, which contains fibers of immunoglobulins and various proteins. The auricle contains many nerve endings, such as effector nerve endings and endothelial Rhine-Deisser bodies. It is these nerve cells that help regulate the heart