Openings of the Pulmonary Veins

The orifices of the pulmonary veins are the openings through which the pulmonary veins enter the right atrium. These holes are located in the lower part of the right lung. The openings of the pulmonary veins are one of the most important elements of the circulatory system, as they ensure the flow of venous blood into the right atrium and further into the lungs for oxygenation.

The openings of the pulmonary veins are important for the functioning of the body. They ensure blood circulation in the lungs, where the blood is saturated with oxygen and carbon dioxide is removed. In addition, the openings of the pulmonary veins play a role in regulating pressure in the body, since through them the return of venous blood from the lungs to the right atrium occurs, which can lead to a decrease in pressure in the circulatory system.

However, despite its importance, the openings of the pulmonary veins can be subject to various diseases and pathological changes. For example, with some lung diseases, the openings of the pulmonary veins may narrow or close, which leads to impaired blood circulation and deterioration of health.

In general, the openings of the pulmonary veins are an important element of the circulatory system and play an important role in maintaining human health. However, their functioning can be impaired by various diseases, so you need to monitor your health and consult a doctor if any symptoms appear.

The opening of the pulmonary veins (ostia pulmonum, the mouth of the pulmonary veins, synonyms ostium trunci pulmonalis) is one of two natural openings connecting the pulmonary venous network with the descending aorta. The left and right pulmonary veins open in the left and right hemithoraxes, respectively. The openings of the pulmonary veins are a continuation of the tributaries present at the hilum of the lungs (pulmonary hilum). The typical terminal part of the lumen of the pulmonary vein, forming the pulmonary opening in the wall of the lung, is not surrounded by epithelium and is a hollow tube with outgrowths of a connective tissue membrane (bothrychilia) on the surface. On the surface of bothrychia there are microscopic holes through which, in fact, venous blood overflows into the vein.