How does the blood in the lungs be cleansed?

Blood circulates in the human body and supplies energy to various organs, as well as absorbs certain impurities. Unclean blood comes back into the lungs. There are two organs in the chest of a man called the lungs. It is connected to the nose with the airways. The main function of the lungs is to cleanse the blood. It's like knowing how this works. The air we breathe through the nose goes into the lungs. The respiratory tract is divided into several branches in the lungs.

Eventually a very fine tube is formed. The vessels that carry unclean blood into the lungs also become inflamed and circulate. Thus maintaining the blood vessels and airways. There are round cells on the end of the vascular. These cells, like a cluster of grapes, carry oxygen from the airway and bleed into the blood. Simultaneously, the carbon dioxide in the blood is pushed into the airway. There are billions of cells in the lungs that may not even appear visually. The lungs keep the body's blood clean by constantly working.