Tell us about the pulmonary circulation?

The small circle of blood circulation begins in the heart, namely in the right ventricle. Here the blood is venous, it went through the whole body, gave up all the oxygen and carries a lot of carbon dioxide. From the right ventricle, blood is released into the pulmonary arteries under the influence of heart contraction. Through them, it reaches the lungs, the arteries are divided into small vessels and reach the alveoli. Here, the blood exchanges carbon dioxide for oxygen. Further, the blood is collected in the pulmonary veins through the small pulmonary vessels. This oxygen-rich blood eventually enters the left atrium.